CN110002466B - Low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal and preparation method thereof - Google Patents
Low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal and preparation method thereof Download PDFInfo
- Publication number
- CN110002466B CN110002466B CN201910349016.6A CN201910349016A CN110002466B CN 110002466 B CN110002466 B CN 110002466B CN 201910349016 A CN201910349016 A CN 201910349016A CN 110002466 B CN110002466 B CN 110002466B
- Authority
- CN
- China
- Prior art keywords
- potassium
- solution
- low
- manganese
- prussian blue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000013078 crystal Substances 0.000 title claims abstract description 103
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910001868 water Inorganic materials 0.000 title claims abstract description 74
- 239000013225 prussian blue Substances 0.000 title claims abstract description 64
- 229960003351 prussian blue Drugs 0.000 title claims abstract description 63
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 title claims abstract description 62
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- GJNPZTQCFSCRKK-UHFFFAOYSA-N [C-]#N.[Mn+2].[K+].[C-]#N.[C-]#N Chemical compound [C-]#N.[Mn+2].[K+].[C-]#N.[C-]#N GJNPZTQCFSCRKK-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000008139 complexing agent Substances 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- 239000000276 potassium ferrocyanide Substances 0.000 claims abstract description 29
- XOGGUFAVLNCTRS-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] XOGGUFAVLNCTRS-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000007547 defect Effects 0.000 claims abstract description 20
- HVCXHPPDIVVWOJ-UHFFFAOYSA-N [K].[Mn] Chemical compound [K].[Mn] HVCXHPPDIVVWOJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011572 manganese Substances 0.000 claims abstract description 19
- 150000002696 manganese Chemical class 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- -1 potassium ferricyanide manganese Chemical compound 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 15
- 159000000000 sodium salts Chemical class 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 8
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 238000005054 agglomeration Methods 0.000 claims description 7
- 230000002776 aggregation Effects 0.000 claims description 7
- IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical compound [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 claims description 5
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 claims description 5
- 229940039790 sodium oxalate Drugs 0.000 claims description 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 235000011056 potassium acetate Nutrition 0.000 claims description 4
- 239000001508 potassium citrate Substances 0.000 claims description 4
- 229960002635 potassium citrate Drugs 0.000 claims description 4
- 235000011082 potassium citrates Nutrition 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000001632 sodium acetate Substances 0.000 claims description 4
- 235000017281 sodium acetate Nutrition 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- OAVRWNUUOUXDFH-UHFFFAOYSA-H 2-hydroxypropane-1,2,3-tricarboxylate;manganese(2+) Chemical compound [Mn+2].[Mn+2].[Mn+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O OAVRWNUUOUXDFH-UHFFFAOYSA-H 0.000 claims description 3
- 229910021380 Manganese Chloride Inorganic materials 0.000 claims description 3
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 claims description 3
- 229940071125 manganese acetate Drugs 0.000 claims description 3
- 239000011565 manganese chloride Substances 0.000 claims description 3
- 235000002867 manganese chloride Nutrition 0.000 claims description 3
- 229940099607 manganese chloride Drugs 0.000 claims description 3
- 239000011564 manganese citrate Substances 0.000 claims description 3
- 235000014872 manganese citrate Nutrition 0.000 claims description 3
- 229940097206 manganese citrate Drugs 0.000 claims description 3
- 229910001437 manganese ion Inorganic materials 0.000 claims description 3
- 229940099596 manganese sulfate Drugs 0.000 claims description 3
- 239000011702 manganese sulphate Substances 0.000 claims description 3
- 235000007079 manganese sulphate Nutrition 0.000 claims description 3
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 claims description 3
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 3
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 3
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims 2
- BDOGHYSOSXQHCL-UHFFFAOYSA-N [K].[K].CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O.NCCN Chemical compound [K].[K].CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O.NCCN BDOGHYSOSXQHCL-UHFFFAOYSA-N 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 76
- 238000001556 precipitation Methods 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 238000003786 synthesis reaction Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000036632 reaction speed Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 22
- 238000002441 X-ray diffraction Methods 0.000 description 14
- 150000002500 ions Chemical class 0.000 description 12
- 238000001878 scanning electron micrograph Methods 0.000 description 10
- 238000001757 thermogravimetry curve Methods 0.000 description 10
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 238000004993 emission spectroscopy Methods 0.000 description 6
- 238000009616 inductively coupled plasma Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- UTYXJYFJPBYDKY-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide;trihydrate Chemical compound O.O.O.[K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] UTYXJYFJPBYDKY-UHFFFAOYSA-N 0.000 description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 238000002524 electron diffraction data Methods 0.000 description 4
- ALIMWUQMDCBYFM-UHFFFAOYSA-N manganese(2+);dinitrate;tetrahydrate Chemical compound O.O.O.O.[Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ALIMWUQMDCBYFM-UHFFFAOYSA-N 0.000 description 4
- 238000010899 nucleation Methods 0.000 description 4
- 230000006911 nucleation Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229940050931 potassium citrate monohydrate Drugs 0.000 description 4
- 229960000999 sodium citrate dihydrate Drugs 0.000 description 4
- 229910052723 transition metal Inorganic materials 0.000 description 4
- 150000003624 transition metals Chemical class 0.000 description 4
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 4
- 238000009388 chemical precipitation Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical class [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- MGDKBCNOUDORNI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;potassium Chemical compound [K].[K].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O MGDKBCNOUDORNI-UHFFFAOYSA-N 0.000 description 2
- BDOYKFSQFYNPKF-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;sodium Chemical compound [Na].[Na].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O BDOYKFSQFYNPKF-UHFFFAOYSA-N 0.000 description 2
- 229910000616 Ferromanganese Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012621 metal-organic framework Substances 0.000 description 2
- 229960003975 potassium Drugs 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229960001790 sodium citrate Drugs 0.000 description 2
- 239000000264 sodium ferrocyanide Substances 0.000 description 2
- GTSHREYGKSITGK-UHFFFAOYSA-N sodium ferrocyanide Chemical compound [Na+].[Na+].[Na+].[Na+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] GTSHREYGKSITGK-UHFFFAOYSA-N 0.000 description 2
- 235000012247 sodium ferrocyanide Nutrition 0.000 description 2
- 229910017112 Fe—C Inorganic materials 0.000 description 1
- 101000993059 Homo sapiens Hereditary hemochromatosis protein Proteins 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- GFORUURFPDRRRJ-UHFFFAOYSA-N [Na].[Mn] Chemical compound [Na].[Mn] GFORUURFPDRRRJ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000002003 electron diffraction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000037427 ion transport Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- ISPYRSDWRDQNSW-UHFFFAOYSA-L manganese(II) sulfate monohydrate Chemical compound O.[Mn+2].[O-]S([O-])(=O)=O ISPYRSDWRDQNSW-UHFFFAOYSA-L 0.000 description 1
- 239000004530 micro-emulsion Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229940039748 oxalate Drugs 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/14—Cyanic or isocyanic acid; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Abstract
The invention discloses a low-water low-defect ferrous cyanide manganese potassium Prussian blue cubic crystal and a preparation method thereof, belonging to the technical field of material synthesis. The invention aims to solve the problem of [ Fe (CN) of the ferrous cyanide manganese potassium Prussian blue material6]4‑The technical problem of higher defect and crystal water is solved, and the low-water low-defect ferrous manganese potassium prussian blue cubic crystal is provided, and the chemical general formula of the low-water low-defect ferrous manganese potassium prussian blue cubic crystal is KxMn[Fe(CN)6]1‑y□y·zH2X is more than or equal to 1.9 and less than or equal to 2.1, y is more than or equal to 0 and less than or equal to 0.03, z is more than or equal to 0 and less than or equal to 0.2, and the mass content of crystal water is less than 1 percent. The invention adopts soluble manganese salt and potassium ferrocyanide as raw materials, effectively reduces the excessive precipitation reaction speed and prolongs the crystal growth time by optimizing the complexing agent and the reaction temperature, thereby achieving the purpose of reducing defects and crystal water in the Prussian blue crystal. Thereby obtaining the high-quality Prussian blue cubic crystal with the near stoichiometric ratio.
Description
Technical Field
The invention belongs to the technical field of material synthesis, and particularly relates to a low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal and a preparation method thereof.
Background
Prussian Blue (PB), i.e. ferric ferrocyanide, chemical formula Fe4[Fe(CN)6]3Originally synthesized by Diesbach, germany, in the beginning of the eighteenth century. As the name suggests, prussian blue was originally used as a brilliant dye in industrial dyeing, pigment inks and other color-related fields. If some Fe in Prussian Blue is replaced by other transition metal and proper content of alkali metal or alkaline earth metal element is introduced, many materials with similar structure can be obtained, which are called Prussian Blue Alloys (PBA) and have a general formula of AxMy[Fe(CN)6]1-y□y·zH2O, A represents an alkali metal or alkaline earth metal element, M represents a transition metal element, □Represents [ M' (CN)6]4-Defect, z represents the number of crystal waters contained in a single unit cell. In the lattice of the Prussian blue material, metal and ferrocyanide are arranged according to Fe-C [ identical to ] N-M to form a three-dimensional structure framework, Fe ions and metal M ions are arranged according to a cube shape, and C [ identical to ] N is positioned on the edges of the cube and is a metal-organic framework (MOFs) with an open type. It has rigid frame structure and open macropores and sites, forms a structure similar to a molecular sieve, has simple synthetic process, no toxicity and low cost, and is suitable for large-scale production. With the continuous and deep knowledge of the materials, the application fields of the materials are gradually widened. In recent years, the prussian blue compounds have increasingly prominent research and application values in the fields of electrochemical energy storage, biosensors, low-molecular magnets, cancer treatment, electrochromic devices and the like.
Currently, prussian blue and its analogs are mainly prepared by electrochemical deposition, chemical precipitation, continuous ion adsorption, reverse microemulsion, and the like. Among them, the chemical precipitation method has the advantages of simple process, low cost, etc., and becomes one of the mainstream methods for synthesizing and preparing the materials. The chemical precipitation method is mainly based on the principle of precipitation-dissolution equilibrium, and the solubility product constant of the prussian blue compound is small (generally less than 10)-13) This means that the precipitation reaction rate is so fast that the atomic arrangement is disordered to produce a large amount of [ Fe (CN) ]6]4-And lattice defects. These [ Fe (CN)6]4-The defects can reduce the content of alkali metal atoms in crystal lattices, so that single transition metal is suspended, and water molecules can coordinate with the transition metal atoms to maintain stable structure and form coordinated crystal water. In addition, the pores of the prussian blue compound can store a large amount of water molecules besides containing alkali metal atoms, and the interstitial water molecules and the coordinated water molecules simultaneously form crystal water of the prussian blue compound, and the mass fraction of the crystal water is usually over 10%. In addition, too fast a precipitation rate may cause agglomeration of the material and uneven particle size distribution. The defects, the crystal water and the agglomeration morphology can directly influence the performance of the prussian blue compound device.
The ferrocyanide manganese potassium is a prussian blue material of manganese-iron series, has the characteristics of low cost, rich resources, environmental friendliness and the like, and is unique among a plurality of prussian blue compounds. The chemical formula of the potassium ferrocyanide manganese can be expressed as KxMn[Fe(CN)6]1-y□y·zH2O, wherein □ represents [ Fe (CN)6]4-Defect, H2O is crystal water. Similar to other Prussian blue materials, the actual synthesized potassium ferrocyanide manganese contains a large amount of crystal water and [ Fe (CN) due to the over-high precipitation reaction speed6]4-And (5) a defect. For example: j. Mater. chem.A,2017,5, 4325-4330 discloses a composition K1.75Mn[Fe(CN)6]0.93□0.07·0.16H2Ferrous manganese potassium O material of [ Fe (CN)6]4-The defect rate was 7%, and the actual crystal water content of this sample was 3.2% according to the supporting information file provided, so the corresponding composition should be K1.75Mn[Fe(CN)6]0.93□0.07·0.58H2O; acta,2012,62,139-145 discloses a composition K0.1Mn[Fe(CN)6]0.7□0.3·3.6H2O with a crystal water content of 23.8%, [ Fe (CN)6]3-The defect rate is as high as 30 percent; chem. commu.2017, 53,5569 discloses a composition K1.67Mn[Fe(CN)6]0.91□0.09·0.73H2The ferrous manganese potassium cyanide material of O has a crystal water content of 4.05%, [ Fe (CN)6]4-The defect is 9%; J.am.chem.Soc.2017,139,2164-2167 disclose a composition K1.89Mn[Fe(CN)6]0.92□0.08·0.75H2O ferrous manganese potassium cyanide material with 4% water of crystallization [ Fe (CN)6]4-The defect rate reaches 8%.
The crystal water in the prussian blue material can be removed by a physical method, for example, CN109292795A discloses a method for reducing the crystal water of a sample by carrying out heat treatment on sodium manganese ferrocyanide prussian blue material under an inert gas atmosphere; J.Am.chem.SocUs 2015,137,2658-2664 discloses a method for removing crystal water of ferrimanganin prussian blue type material by a high vacuum method. Although the subsequent treatment under inert gas or high vacuum condition can remove the crystal water, the subsequent treatment consumes a large amount of energy, causes unnecessary waste and greatly increases the material preparation cost; in addition, the physical removal of crystal water does not reduce the high Fe (CN) content of the original material6]4-The defect rate is high, and the crystal water is removed and then the crystal water is placed in the air to easily absorb the water again, so that the original high-water and high-defect state is recovered. Therefore, how to directly prepare the ferrocyanide manganese potassium prussian blue material with high crystallinity, low crystal water content and low defect rate by one step through synthesis design is very critical.
Disclosure of Invention
The invention aims to solve the problem of [ Fe (CN) of the ferrous cyanide manganese potassium Prussian blue material in the prior art6]4-Defects and high content of crystal water.
In order to solve the technical problems, the invention firstly provides a low-water low-defect ferrous manganese potassium prussian blue cubic crystal, and the chemical general formula of the low-water low-defect ferrous manganese potassium prussian blue cubic crystal is KxMn[Fe(CN)6]1-y□y·zH2O; wherein x is more than or equal to 1.9 and less than or equal to 2.1, y is more than or equal to 0 and less than or equal to 0.03, z is more than or equal to 0 and less than or equal to 0.2, the mass content of crystal water is less than 1 percent, and □ represents [ Fe (CN)6]4-And (5) a defect.
Preferably, the low-water low-defect ferrous manganese potassium cyanide Prussian blue cubic crystal has x being more than or equal to 1.98 and less than or equal to 2.02, y being more than or equal to 0 and less than or equal to 0.03, z being more than or equal to 0 and less than or equal to 0.15, and the mass content of crystal water is less than 1%.
The low-water low-defect ferrocyanide manganese potassium Prussian blue cubic crystal has high crystallinity, single crystal grains are in a cubic shape with clear edges and corners, the size is 1-5 mu m, and no agglomeration phenomenon exists among the crystal grains.
The invention also provides a preparation method of the low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal, which comprises the following steps:
A. dissolving potassium ferrocyanide and a complexing agent in deionized water to obtain a solution A; the molar ratio of the potassium ferrocyanide to the complexing agent in the solution A is 1: 20-100 parts of;
B. dissolving soluble manganese salt in deionized water to obtain solution B;
C. and dripping the solution B into the solution A, carrying out heat preservation reaction, and after the reaction is finished, carrying out cooling, solid-liquid separation, washing and drying to obtain the potassium ferricyanide Prussian blue cubic crystal.
In the preparation method of the low-water low-defect potassium ferrocyanide Prussian blue cubic crystal, in the step A, the concentration of potassium ferrocyanide in the solution A is 0.02-0.2M.
In the preparation method of the low-water low-defect ferrous potassium manganese cyanide Prussian blue cubic crystal, in the step A, the complexing agent is a mixed complexing agent of a potassium salt complexing agent and a sodium salt complexing agent according to a molar ratio of 0.2-4; the potassium salt complexing agent is at least one of potassium citrate, potassium oxalate, ethylene diamine tetraacetic acid dipotassium or potassium acetate, and the sodium salt complexing agent is at least one of sodium citrate, sodium oxalate, ethylene diamine tetraacetic acid disodium or sodium acetate.
In the preparation method of the low-water low-defect ferrous manganese potassium prussian blue cubic crystal, in the step A, the temperature of the solution A is kept at 70-95 ℃.
In the preparation method of the low-water-content low-defect ferrocyanide manganese potassium prussian blue cubic crystal, in the step B, the soluble manganese salt is one or more of manganese sulfate, manganese chloride, manganese nitrate, manganese acetate or manganese citrate.
In the preparation method of the low-water low-defect ferrous manganese potassium cyanide Prussian blue cubic crystal, in the step B, the concentration of manganese ions in the solution B is 0.1-2.0M.
In the preparation method of the low-water low-defect ferrous manganese potassium prussian blue cubic crystal, in the step B, the temperature of the solution B is kept at 70-95 ℃.
In the preparation method of the low-water-content low-defect ferrocyanide potassium prussian blue cubic crystal, in the step C, the molar ratio of the soluble manganese salt to the potassium ferrocyanide is controlled to be 1-3: 1.
in the preparation method of the low-water-content low-defect ferrous manganese potassium prussian blue cubic crystal, in the step C, the dropping speed of the solution B into the solution A is 0.1-5 mL/min.
In the preparation method of the low-water low-defect ferrous manganese potassium prussian blue cubic crystal, in the step C, the temperature of the heat preservation reaction is 70-95 ℃ and the time is 10-36 hours.
In the preparation method of the low-water low-defect ferrous manganese potassium prussian blue cubic crystal, in the step C, the drying temperature is 60-120 ℃ and the drying time is 2-12 hours.
The invention has the beneficial effects that:
the method adopts soluble manganese salt and potassium ferrocyanide as raw materials, optimizes the synthesis path through a high-temperature and high-concentration complexing agent, effectively reduces the initial nucleation speed of precipitation reaction, and fully promotes the growth of ions and crystals, thereby achieving the purpose of simultaneously reducing defects and crystal water in ferromanganese prussian blue materials; repeated verification for many times proves that the method can grow high-quality Prussian-blue-like crystals close to the stoichiometric ratio, and the Prussian-blue-like crystals have high crystallinity, uniform particle size distribution, cubic morphology and no particle agglomeration phenomenon; the method of the invention emphasizes solving the problems of low potassium content, crystal water and [ Fe (CN) of a synthetic sample6]4-The method has the characteristics of greenness, convenience, easy operation and the like, and has good economic and application values.
Drawings
FIG. 1 is an X-ray diffraction pattern of the material obtained in example 1.
FIG. 2 is a 2 μm SEM image of the material obtained in example 1.
FIG. 3 is a 50 μm SEM image of the material obtained in example 1.
FIG. 4 shows the electron diffraction pattern of the material obtained in example 1.
FIG. 5 is a thermogravimetric analysis curve of the material obtained in example 1.
FIG. 6 is an X-ray diffraction pattern of the material obtained in example 2.
FIG. 7 is a 2 μm SEM image of the material obtained in example 2.
FIG. 8 is a 50 μm SEM image of the material obtained in example 2.
FIG. 9 shows the electron diffraction pattern of the material obtained in example 2.
FIG. 10 is a thermogravimetric analysis curve of the material obtained in example 2.
FIG. 11 is an X-ray diffraction pattern of the material obtained in comparative example 1.
FIG. 12 is a 5 μm scanning electron micrograph of the material obtained in comparative example 1.
FIG. 13 is a thermogravimetric analysis curve of the material obtained in comparative example 1.
FIG. 14 is an X-ray diffraction pattern of the material obtained in comparative example 2.
FIG. 15 is a 5 μm scanning electron micrograph of the material obtained in comparative example 2.
FIG. 16 is a thermogravimetric analysis curve of the material obtained in comparative example 2.
FIG. 17 is an X-ray diffraction pattern of the material obtained in comparative example 3.
FIG. 18 is a 3 μm scanning electron micrograph of the material obtained in comparative example 3.
FIG. 19 is a thermogravimetric analysis curve of the material obtained in comparative example 3.
Detailed Description
In particular to a low-water low-defect ferrous manganese potassium prussian blue cubic crystal with a chemical general formula of KxMn[Fe(CN)6]1-y□y·zH2O; wherein x is more than or equal to 1.9 and less than or equal to 2.1, y is more than or equal to 0 and less than or equal to 0.03, z is more than or equal to 0 and less than or equal to 0.2, the mass content of crystal water is less than 1 percent, and □ represents [ Fe (CN)6]4-And (5) a defect.
In the traditional precipitation synthesis, as the reaction speed is too high, K ions cannot fill all interstitial sites, the filling rate is often less than 90%, so that redundant interstitial sites are required to be filled with water molecules, and more interstitial site crystal water is generated; in addition, since the reaction rate is too high, a large amount of [ Fe (CN) ]is generated6]4-Defects, causing the transition metal to hang up, causing a large number of coordinated water molecules. Too low values of x and y increase the content of interstitial and coordinated crystal water, respectively, which is detrimental to the properties of the material. The present invention enables very low [ Fe (CN) ]by reducing crystal nucleation and growth6]4-Defect rate and very high K ion fill rate. The size of the gap of the frame structure of the ferrous potassium manganese cyanide is larger
Far greater than K+Diameter of
The number of K ions that can be filled in a single unit cell under conditions of slow precipitation and sufficient ion transport is likely to exceed 2.
By further optimizing the synthesis conditions, the ferrous manganese potassium cyanide Prussian blue cubic crystal which is closer to the stoichiometric ratio and has lower water and low defect can be obtained, and the determination can be determined by thermogravimetric analysis and inductively coupled plasma emission spectroscopy (ICP-AES), wherein x is more than or equal to 1.98 and less than or equal to 2.02, y is more than or equal to 0 and less than or equal to 0.02, and z is more than or equal to 0 and less than or equal to 0.15.
The low-water low-defect ferrous manganese potassium prussian blue cubic crystal provided by the invention can be determined to be in a monoclinic structure through X-ray diffraction and transmission electron microscope electron diffraction, and the space group is p21N, excellent crystallinity, clear edge angle cubic shape of single crystal grain, 1-5 mu m size, no agglomeration phenomenon among crystal grains
The invention also provides a preparation method of the low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal, which comprises the following steps:
A. dissolving potassium ferrocyanide and a complexing agent in deionized water to obtain a solution A; the molar ratio of the potassium ferrocyanide to the complexing agent in the solution A is 1: 20-100 parts of;
B. dissolving soluble manganese salt in deionized water to obtain solution B;
C. and dripping the solution B into the solution A, carrying out heat preservation reaction, and after the reaction is finished, carrying out cooling, solid-liquid separation, washing and drying to obtain the potassium ferricyanide Prussian blue cubic crystal.
The invention adopts the high-concentration complexing agent to improve the combination of the complexing agent and Mn ions, thereby realizing the slow release of the Mn ions from the complex in the precipitation process and slowing down the precipitation reaction speed; in addition, the potassium salt complexing agent is adopted and part of the sodium salt complexing agent is added at the same time, so that the buffering of K ions is realized, and the improvement of crystallinity is facilitated. In fact, the addition of the sodium salt complexing agent does not cause the generation of sodium ferrocyanide, and because potassium ferrocyanide is more stable than sodium ferrocyanide from thermodynamics and crystal structures, the molar ratio of the potassium salt complexing agent to the sodium salt complexing agent is controlled to be 0.2-4, so that a sufficient amount of K + in the solution is ensured, the reaction products are potassium ferrocyanide, and the Na is prevented from participating in the reaction.
In the invention, the potassium salt complexing agent is selected from at least one of potassium citrate, potassium oxalate, ethylene diamine tetraacetic acid dipotassium or potassium acetate, and the sodium salt complexing agent is selected from at least one of sodium citrate, sodium oxalate, ethylene diamine tetraacetic acid disodium or sodium acetate.
The raw materials mainly comprise potassium ferrocyanide and soluble manganese salt, wherein the soluble manganese salt is one or more of manganese sulfate, manganese chloride, manganese nitrate, manganese acetate or manganese citrate. In order to match with a high-concentration complexing agent, reduce the reaction rate and simultaneously ensure that the reaction is more thorough, the method controls the concentration of potassium ferrocyanide in the solution A to be 0.02-0.2M, the concentration of manganese ions in the solution B to be 0.1-2.0M, and the molar ratio of soluble manganese salt to potassium ferrocyanide is 1-3: 1.
in order to promote the dissolution of the complexing agent and the sufficient migration of various ions, the temperature of the solution A and the temperature of the solution B are both kept at 70-95 ℃, so that the reaction is always carried out at a high temperature and in a state close to a constant temperature during dropping.
According to the invention, the high-concentration complexing agent is dissolved in the solution A, so that in the step C, the solution B is dripped into the solution A, the concentration of the complexing agent is prevented from being diluted, the dripping speed is controlled to be 0.1-5 mL/min, and the reaction rate is properly reduced.
On the basis of adopting a high-concentration complexing agent, the reaction temperature is controlled to be 70-95 ℃, the dissolving and precipitating balance can shift to the dissolving direction at a higher reaction temperature, so that the precipitation reaction rate is reduced, uniform nucleation and full growth of crystals are realized, and the crystallinity of the product is ensured; at the temperature, the purpose of carrying out heat preservation reaction for 10-36 h is aging, so that the reaction is more complete and the crystallinity is better.
In the step C of the invention, the drying temperature is 60-120 ℃, and the drying time is 2-12 h.
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1: high temperature + high complexing agent concentration
A. Dissolving 0.003mol of potassium ferrocyanide trihydrate, 0.1mol of sodium citrate dihydrate and 0.1mol of potassium citrate monohydrate in 100mL of deionized water to obtain a solution A, and keeping the temperature of the solution A at 70 ℃; wherein the molar ratio of the potassium ferrocyanide to the citrate complexing agent is 1: 67;
B. dissolving 0.006mol of manganese nitrate tetrahydrate in 50mL of deionized water to obtain a solution B, and keeping the temperature of the solution B at 70 ℃;
C. dripping the solution B into the solution A at the speed of 0.5mL/min, keeping the temperature at 70 ℃ for reaction for 12 hours, cooling after the reaction is finished, washing precipitates for multiple times, centrifugally separating, and finally drying in a common oven at the temperature of 80 ℃ for 12 hours to obtain the potassium ferricyanide Prussian blue cubic crystal.
FIG. 1 is the X-ray diffraction pattern of the material obtained in this example, FIGS. 2 and 3 are the SEM pictures of the material, and FIG. 4 is the electron diffraction pattern of the material, it can be seen that the structure of the material obtained in this example belongs to the space group p21The/n ferrous cyanide manganese potassium structure has a single crystal grain presenting 1-2 mu m of cubic single crystal, is uniformly distributed integrally and has good dispersibility; FIG. 5 is a thermogravimetric analysis curve of the material, which shows that the water of crystallization is 0.6%; the molecular formula of the material is determined as K by inductively coupled plasma emission spectroscopy (ICP-AES)1.98Mn[Fe(CN)6]0.98□0.02·0.11H2O。
Example 2: high temperature + high complexing agent concentration
A. Dissolving 0.003mol of potassium ferrocyanide trihydrate, 0.03mol of sodium oxalate and 0.03mol of potassium oxalate in 50mL of deionized water to obtain a solution A, and keeping the temperature of the solution A at 95 ℃; the molar ratio of the potassium ferrocyanide to the oxalate complexing agent is 1: 20;
B. dissolving 0.0045mol of manganese sulfate monohydrate in 100mL of deionized water to obtain a solution B, and keeping the temperature of the solution B at 95 ℃;
C. dripping the solution B into the solution A at the speed of 1mL/min, keeping the temperature at 95 ℃ for reaction for 2h, cooling after the reaction is finished, washing precipitates for multiple times, centrifugally separating, and finally drying in a common oven at the temperature of 80 ℃ for 12h to obtain the potassium ferricyanide Prussian blue cubic crystal.
FIG. 6 is the X-ray diffraction pattern of the material obtained in this example, FIGS. 7 and 8 are the SEM pictures of the material, and FIG. 9 is the electron diffraction pattern of the material, it can be seen that the structure of the material obtained in this example belongs to the space group p21The/n ferrous cyanide manganese potassium structure has a single crystal grain presenting 2-3 mu m cubic single crystal, is uniformly distributed integrally and has good dispersibility; FIG. 10 is a thermogravimetric analysis curve of the material, which shows a water of crystallization content of 0.5%; the molecular formula of the material is determined as K by inductively coupled plasma emission spectroscopy (ICP-AES)2.02Mn[Fe(CN)6]0.99□0.01·0.10H2O。
Comparative example 1: low temperature + high complexing agent concentration
A. Dissolving 0.003mol of potassium ferrocyanide trihydrate, 0.1mol of sodium citrate dihydrate and 0.1mol of potassium citrate monohydrate in 100mL of deionized water to obtain a solution A, and keeping the temperature of the solution A at 50 ℃; the molar ratio of the potassium ferrocyanide to the citrate complexing agent is 1: 67;
B. dissolving 0.006mol of manganese nitrate tetrahydrate in 50mL of deionized water to obtain a solution B, and keeping the temperature of the solution B at 50 ℃;
C. dripping the solution B into the solution A at the speed of 0.5mL/min, keeping the temperature at 50 ℃ for reaction for 12 hours, cooling after the reaction is finished, washing precipitates for multiple times, centrifugally separating, and finally drying in a common oven at the temperature of 80 ℃ for 12 hours to obtain the potassium ferricyanide Prussian blue material.
FIG. 11 is the X-ray diffraction pattern of the material obtained in the comparative example, and FIG. 12 is the SEM image of the material, it can be seen that the structure of the material obtained in the comparative example still belongs to the space group p21The/n potassium ferricyanide manganese structure is irregular in grain shape, cubic single crystals are not presented, the average grain size is in the nanometer level, the difference between the average grain size and the grain shape and the size in the embodiment 1 and the embodiment 2 is huge, and obvious diffraction peak broadening and overlapping can be seen by combining X-ray diffraction, which shows that the grain size and the crystallinity of the material are greatly reduced; FIG. 13 is a thermogravimetric analysis curve of the material, which shows that the water of crystallization is 4.7%, much greater than 1%; the molecular formula of the material is determined as K by inductively coupled plasma emission spectroscopy (ICP-AES)1.85Mn[Fe(CN)6]0.94□0.06·0.89H2O。
Comparative example 2: high temperature + low complexing agent concentration
A. Dissolving 0.003mol of potassium ferrocyanide trihydrate, 0.01mol of sodium citrate dihydrate and 0.01mol of potassium citrate monohydrate in 100mL of deionized water to obtain a solution A, and keeping the temperature of the solution A at 95 ℃; the molar ratio of the potassium ferrocyanide to the citrate complexing agent is 1: 6.7;
B. dissolving 0.006mol of manganese nitrate tetrahydrate in 50mL of deionized water to obtain a solution B, and keeping the temperature of the solution B at 95 ℃;
C. dripping the solution B into the solution A at the speed of 0.5mL/min, keeping the temperature of 95 ℃ for reaction for 12 hours, cooling after the reaction is finished, washing precipitates for multiple times, centrifugally separating, and finally drying in a common oven at the temperature of 80 ℃ for 12 hours to obtain the potassium ferricyanide Prussian blue material.
FIG. 14 is an X-ray diffraction pattern of the material obtained in the present comparative example, and FIG. 15 is a scanning electron micrograph of the material, it can be seen that the structure of the material obtained in the comparative example still belongs to the space group p21The potassium ferrocyanide manganese structure of/n, similar to comparative example 1, has irregular crystal grain shape, does not present cubic single crystal, and has average crystal grain size of nanoThe grain size is in the meter level, the difference between the grain shape and the grain size in the embodiment 1 and the embodiment 2 is huge, and the obvious broadening and overlapping of diffraction peaks can be seen by combining X-ray diffraction, which shows that the grain size and the crystallinity of the material are greatly reduced; FIG. 16 is a thermogravimetric analysis curve of the material, which shows that the water of crystallization is 4.1% and much more than 1%; the molecular formula of the material is determined as K by inductively coupled plasma emission spectroscopy (ICP-AES)1.86Mn[Fe(CN)6]0.95□0.05·0.78H2O。
Comparative example 3: low temperature + low complexing agent concentration
A. Dissolving 0.003mol of potassium ferrocyanide trihydrate, 0.01mol of sodium citrate dihydrate and 0.01mol of potassium citrate monohydrate in 100mL of deionized water to obtain a solution A, and keeping the temperature of the solution A at 50 ℃; the molar ratio of the potassium ferrocyanide to the citrate complexing agent is 1: 6.7;
B. dissolving 0.006mol of manganese nitrate tetrahydrate in 50mL of deionized water to obtain a solution B, and keeping the temperature of the solution B at 50 ℃;
C. dripping the solution B into the solution A at the speed of 0.5mL/min, keeping the temperature at 50 ℃ for reaction for 12 hours, cooling after the reaction is finished, washing precipitates for multiple times, centrifugally separating, and finally drying in a common oven at the temperature of 80 ℃ for 12 hours to obtain the potassium ferricyanide Prussian blue material.
FIG. 17 is an X-ray diffraction pattern of the material obtained in the present comparative example, and FIG. 18 is a scanning electron micrograph of the material, it can be seen that the structure of the material obtained in the comparative example still belongs to the space group p21The/n potassium ferricyanide manganese structure is similar to that of the comparative example 1 and the comparative example 2, the crystal grain shape is irregular, cubic single crystals are not presented, the average crystal grain size is in a nanometer level, the obvious agglomeration phenomenon exists, the difference between the shape and the size of the crystal grain is huge compared with that of the crystal grain in the example 1 and the example 2, the obvious diffraction peak broadening and overlapping can be seen by combining X-ray diffraction, and the crystal grain size and the crystallinity of the material are greatly reduced; FIG. 19 is a thermogravimetric analysis curve of the material, which shows that the water of crystallization is 7.5%, much greater than 1%; the molecular formula of the material is determined as K by inductively coupled plasma emission spectroscopy (ICP-AES)1.52Mn[Fe(CN)6]0.87□0.13·1.35H2O。
According to the embodiments and the comparative examples, the synthesis path is optimized by the high-temperature and high-concentration complexing agent, the dropping sequence and speed are controlled, the initial nucleation speed of the precipitation reaction is effectively reduced, and the growth of ions and crystals is fully promoted, so that the purpose of simultaneously reducing defects and crystal water in the ferromanganese prussian blue material is achieved, prussian blue-like crystals close to the stoichiometric ratio can be prepared, the crystallinity is high, the particle size distribution is uniform, and the prussian blue crystals are cubic.
Claims (7)
1. The low-water low-defect ferrous manganese potassium prussian blue cubic crystal is characterized in that: the chemical formula is KxMn[Fe(CN)6]1-y□y•zH2O; wherein x is more than or equal to 1.9 and less than or equal to 2.1, y is more than or equal to 0 and less than or equal to 0.03, z is more than or equal to 0 and less than or equal to 0.2, the mass content of crystal water is less than 1 percent, and □ represents [ Fe (CN)6]4-A defect; the preparation method comprises the following steps:
A. dissolving potassium ferrocyanide and a complexing agent in deionized water to obtain a solution A; the molar ratio of the potassium ferrocyanide to the complexing agent in the solution A is 1: 20-100 parts of;
B. dissolving soluble manganese salt in deionized water to obtain solution B;
C. dripping the solution B into the solution A, carrying out heat preservation reaction, and after the reaction is finished, carrying out cooling, solid-liquid separation, washing and drying to obtain a prussian blue cubic crystal of potassium ferricyanide manganese;
in the step A, the complexing agent is a mixed complexing agent of a potassium salt complexing agent and a sodium salt complexing agent according to a molar ratio of 0.2-4; wherein the potassium salt complexing agent is at least one of potassium citrate, potassium oxalate, dipotassium ethylenediamine tetraacetic acid or potassium acetate, and the sodium salt complexing agent is at least one of sodium citrate, sodium oxalate, disodium ethylenediamine tetraacetic acid or sodium acetate;
in the step A, keeping the temperature of the solution A at 70-95 ℃;
in the step B, keeping the temperature of the solution B at 70-95 ℃;
in the step C, the dropping speed of the solution B into the solution A is 0.1-5 mL/min;
in the step C, the temperature of the heat preservation reaction is 70-95 ℃, and the time is 10-36 h;
in the step C, when dropwise adding, controlling the molar ratio of the soluble manganese salt to the potassium ferrocyanide to be 1-3: 1.
2. the low water low defect potassium ferricyanide prussian blue-like cubic crystal according to claim 1, characterized in that: x is more than or equal to 1.98 and less than or equal to 2.02, y is more than or equal to 0 and less than or equal to 0.02, and z is more than or equal to 0 and less than or equal to 0.15.
3. The low water low defect potassium ferricyanide prussian blue-like cubic crystal according to claim 1 or 2, characterized in that: the crystal grain has high crystallinity, single crystal grains are in a cubic shape with clear edges and corners, the size is 1-5 mu m, and no agglomeration phenomenon exists among the crystal grains.
4. The preparation method of the low-water low-defect ferrous cyanide manganese potassium Prussian blue cubic crystal is characterized by comprising the following steps of: the method comprises the following steps:
A. dissolving potassium ferrocyanide and a complexing agent in deionized water to obtain a solution A; the molar ratio of the potassium ferrocyanide to the complexing agent in the solution A is 1: 20-100 parts of;
B. dissolving soluble manganese salt in deionized water to obtain solution B;
C. dripping the solution B into the solution A, carrying out heat preservation reaction, and after the reaction is finished, carrying out cooling, solid-liquid separation, washing and drying to obtain a prussian blue cubic crystal of potassium ferricyanide manganese;
in the step A, the complexing agent is a mixed complexing agent of a potassium salt complexing agent and a sodium salt complexing agent according to a molar ratio of 0.2-4; wherein the potassium salt complexing agent is at least one of potassium citrate, potassium oxalate, dipotassium ethylenediamine tetraacetic acid or potassium acetate, and the sodium salt complexing agent is at least one of sodium citrate, sodium oxalate, disodium ethylenediamine tetraacetic acid or sodium acetate;
in the step A, keeping the temperature of the solution A at 70-95 ℃;
in the step B, keeping the temperature of the solution B at 70-95 ℃;
in the step C, the dropping speed of the solution B into the solution A is 0.1-5 mL/min;
in the step C, the temperature of the heat preservation reaction is 70-95 ℃, and the time is 10-36 h;
in the step C, when dropwise adding, controlling the molar ratio of the soluble manganese salt to the potassium ferrocyanide to be 1-3: 1.
5. the method for preparing low-water low-defect ferrous manganese potassium prussian blue cubic crystal according to claim 4, which is characterized in that: in the step A, the concentration of potassium ferrocyanide in the solution A is 0.02-0.2M.
6. The method for preparing low-water low-defect ferrous manganese potassium prussian blue cubic crystal according to claim 4, which is characterized in that: in the step B, at least one of the following items is satisfied:
the soluble manganese salt is one or more of manganese sulfate, manganese chloride, manganese nitrate, manganese acetate or manganese citrate;
the concentration of manganese ions in the solution B is 0.1-2.0M.
7. The method for preparing the low-water low-defect ferrous potassium manganous cyanide prussian blue cubic crystal according to any one of claims 4 to 6, which is characterized in that: in the step C, the drying temperature is 60-120 ℃, and the drying time is 2-12 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910349016.6A CN110002466B (en) | 2019-04-28 | 2019-04-28 | Low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910349016.6A CN110002466B (en) | 2019-04-28 | 2019-04-28 | Low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110002466A CN110002466A (en) | 2019-07-12 |
| CN110002466B true CN110002466B (en) | 2022-05-03 |
Family
ID=67174657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910349016.6A Active CN110002466B (en) | 2019-04-28 | 2019-04-28 | Low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110002466B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943227B (en) * | 2020-07-27 | 2022-07-01 | 北京航空航天大学 | Preparation method of low-defect and low-water-content Prussian white analogue |
| CN112645354B (en) * | 2020-12-21 | 2022-07-15 | 电子科技大学 | Surface-modified sodium-manganese-iron-based Prussian blue material and preparation method and application thereof |
| CN112723384B (en) * | 2020-12-25 | 2022-05-10 | 电子科技大学 | Composite manganese-iron-based Prussian blue material and preparation method and application thereof |
| CN113830792B (en) * | 2021-09-15 | 2024-03-26 | 浙江宇钠科技有限公司 | Anhydrous Prussian white material, preparation method and application |
| CN114188502B (en) * | 2021-11-30 | 2024-02-13 | 湖南钠方新能源科技有限责任公司 | Prussian white composite material and preparation method and application thereof |
| CN114212804B (en) * | 2021-12-15 | 2022-12-09 | 武汉理工大学 | Prussian white positive electrode material and preparation method and application thereof |
| CN114506860B (en) * | 2022-01-07 | 2023-08-22 | 清华大学 | Iron-manganese-based Prussian blue solid solution and preparation method thereof |
| CN115448327B (en) * | 2022-09-29 | 2024-03-12 | 广东邦普循环科技有限公司 | Preparation method and application of low-defect Prussian blue positive electrode material |
| CN115676852A (en) * | 2022-11-14 | 2023-02-03 | 中国地质大学（武汉） | Manganese-iron-based Prussian blue potassium ion battery positive electrode material and preparation method and application thereof |
| CN117430134B (en) * | 2023-12-21 | 2024-04-05 | 山东海化集团有限公司 | Preparation method of ferromanganese-based Prussian blue sodium electric positive electrode material and positive electrode material prepared by method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745068A (en) * | 2016-12-12 | 2017-05-31 | 华中科技大学 | A kind of preparation method and applications of the nanometer Prussian Blue of low defect |
| CN107253731A (en) * | 2017-07-13 | 2017-10-17 | 大连民族大学 | A kind of high-performance super capacitance electrode material Co Fe Prussian blue analogue nano cubics and its preparation method and application |
| CN108258239A (en) * | 2018-01-18 | 2018-07-06 | 中国科学院过程工程研究所 | A kind of sodium-ion battery positive material and its preparation method and application |
| CN109437240A (en) * | 2018-10-22 | 2019-03-08 | 清华大学深圳研究生院 | A kind of preparation method of kalium ion battery high potential positive electrode |
-
2019
- 2019-04-28 CN CN201910349016.6A patent/CN110002466B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745068A (en) * | 2016-12-12 | 2017-05-31 | 华中科技大学 | A kind of preparation method and applications of the nanometer Prussian Blue of low defect |
| CN107253731A (en) * | 2017-07-13 | 2017-10-17 | 大连民族大学 | A kind of high-performance super capacitance electrode material Co Fe Prussian blue analogue nano cubics and its preparation method and application |
| CN108258239A (en) * | 2018-01-18 | 2018-07-06 | 中国科学院过程工程研究所 | A kind of sodium-ion battery positive material and its preparation method and application |
| CN109437240A (en) * | 2018-10-22 | 2019-03-08 | 清华大学深圳研究生院 | A kind of preparation method of kalium ion battery high potential positive electrode |
Non-Patent Citations (2)
| Title |
|---|
| "A Fe/Mn-Based Prussian Blue Analogue as a K-Rich Cathode Material for Potassium-Ion Batteries";Jiang Xi等;《CHEMELECTROCHEM》;20170620;第4卷(第9期);第2237-2242页 * |
| "Nanocomposite of manganese ferrocyanide and graphene: A promising cathode material for rechargeable lithium ion batteries";Wang XiaoJun等;《ELECTROCHEMISTRY COMMUNICATIONS》;20130701;第34卷;第246-249页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110002466A (en) | 2019-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110002466B (en) | Low-water low-defect ferrous cyanide manganese potassium prussian blue cubic crystal and preparation method thereof | |
| Yun et al. | Hydrothermal synthesis of Al-doped ZnO nanorod arrays on Si substrate | |
| Hu et al. | Kinetically controlled crystallization for synthesis of monodispersed coordination polymer nanocubes and their self-assembly to periodic arrangements. | |
| Ni et al. | Phase-controllable synthesis of nanosized nickel phosphides and comparison of photocatalytic degradation ability | |
| CN101570348B (en) | Preparation method for compact crystallographic form cobalt hydrate | |
| CN110157407A (en) | InP quantum dot and preparation method thereof | |
| CN112723384B (en) | Composite manganese-iron-based Prussian blue material and preparation method and application thereof | |
| Jiang et al. | Facile and mild preparation of fluorescent ZnO nanosheets and their bioimaging applications | |
| JP2011057518A (en) | High-density nickel-cobalt-manganese coprecipitation hydroxide and method for producing the same | |
| Zhao et al. | Fabrication of assembled-spheres YVO 4:(Ln 3+, Bi 3+) towards optically tunable emission | |
| Cholan et al. | Effect of poly ethylene glycol (PEG) as surfactant on cerium doped ZnS nanoparticles | |
| Chen et al. | Ligand molecules regulate the size and morphology of Cu2O nanocrystals | |
| Shabannia | Synthesis and characterization of Cu-doped ZnO nanorods chemically grown on flexible substrate | |
| Ma et al. | One-dimensional hexagonal-phase NaYF 4: controlled synthesis, self-assembly, and morphology-dependent up-conversion luminescence properties | |
| CN111646496A (en) | Highly ordered perovskite nanosheet film with high polarization characteristic and preparation method thereof | |
| Liu et al. | Silver nanowires with rounded ends: ammonium carbonate-mediated polyol synthesis, shape evolution and growth mechanism | |
| CN114106817A (en) | Manganese-doped organic perovskite cluster material and preparation method thereof | |
| Zhang et al. | Influence of annealing temperature on the photoluminescence properties of ZnO quantum dots | |
| Zhang et al. | Synthesis and characterization of α-MnS polyhedrons and spheres | |
| Nie et al. | Effects of coordination agents on the morphology of CdS nanocrystallites synthesized by the hydrothermal method | |
| Jia et al. | Facile preparation of CaCO3 nanocrystals with unique morphologies controlled by supramolecular complexes | |
| Mu et al. | Phase and shape controlling of MnS nanocrystals in the solvothermal process | |
| Huang et al. | Controlled growth of zinc oxide crystals with tunable shape | |
| CN1364730A (en) | Method for preparing super-fine nanometer ferric oxide powder | |
| Deng et al. | A generic in situ seed-mediated size-control method in the case of cuprous oxide nanocubes and their antibacterial activities |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240119 Address after: Room 236, Floor 2, Building A, South Taihu Elite Planning Industrial Park, No. 2195, Hongfeng Road, Huzhou City, Zhejiang Province, 313000 Patentee after: Zhejiang Tiantian Naneng Technology Co.,Ltd. Address before: 611731, No. 2006, West Avenue, Chengdu hi tech Zone (West District, Sichuan) Patentee before: University of Electronic Science and Technology of China |
|
| TR01 | Transfer of patent right |