CN109019662A - Preparation method and application of multilayer basic zinc carbonate microcrystal - Google Patents
Preparation method and application of multilayer basic zinc carbonate microcrystal Download PDFInfo
- Publication number
- CN109019662A CN109019662A CN201811008701.4A CN201811008701A CN109019662A CN 109019662 A CN109019662 A CN 109019662A CN 201811008701 A CN201811008701 A CN 201811008701A CN 109019662 A CN109019662 A CN 109019662A
- Authority
- CN
- China
- Prior art keywords
- preparation
- zinc carbonate
- reaction
- basic zinc
- crystallite
- 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.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- UOURRHZRLGCVDA-UHFFFAOYSA-D pentazinc;dicarbonate;hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[O-]C([O-])=O.[O-]C([O-])=O UOURRHZRLGCVDA-UHFFFAOYSA-D 0.000 title claims abstract description 16
- 239000013081 microcrystal Substances 0.000 title abstract 5
- 239000000243 solution Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 10
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 3
- 229920001661 Chitosan Polymers 0.000 claims description 30
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Substances CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 17
- 239000000047 product Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 235000019260 propionic acid Nutrition 0.000 claims description 4
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 4
- ULRCHFVDUCOKTE-UHFFFAOYSA-N 3-[3-aminopropyl(diethoxy)silyl]oxybutan-1-amine Chemical compound NCCC[Si](OCC)(OCC)OC(C)CCN ULRCHFVDUCOKTE-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 8
- 239000011701 zinc Substances 0.000 abstract description 8
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 7
- 239000003463 adsorbent Substances 0.000 abstract description 4
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- INJVFBCDVXYHGQ-UHFFFAOYSA-N n'-(3-triethoxysilylpropyl)ethane-1,2-diamine Chemical compound CCO[Si](OCC)(OCC)CCCNCCN INJVFBCDVXYHGQ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002135 nanosheet Substances 0.000 abstract description 2
- 239000011667 zinc carbonate Substances 0.000 abstract description 2
- 229910000010 zinc carbonate Inorganic materials 0.000 abstract description 2
- 235000004416 zinc carbonate Nutrition 0.000 abstract description 2
- 239000012295 chemical reaction liquid Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 239000011592 zinc chloride Substances 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 16
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000002411 thermogravimetry Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OACPJIGCXFFIOJ-UHFFFAOYSA-N 3-silyloxypropan-1-amine Chemical compound NCCCO[SiH3] OACPJIGCXFFIOJ-UHFFFAOYSA-N 0.000 description 1
- 206010017577 Gait disturbance Diseases 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000559 atomic spectroscopy Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009297 electrocoagulation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000013335 mesoporous material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/024—Compounds of Zn, Cd, Hg
- B01J20/0244—Compounds of Zn
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0274—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04 characterised by the type of anion
- B01J20/0277—Carbonates of compounds other than those provided for in B01J20/043
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
A preparation method and application of multi-layer basic zinc carbonate microcrystals relate to the technical field of preparation of water heavy metal ion adsorbents, and 5m L chitosan-propyl is added into a reaction vesselacid colloidal solution, 50 ml Na2CO3aqueous solution, 50 ml ZnCl2stirring and mixing the aqueous solution and 2m L N-aminoethyl-gamma-aminopropyltriethoxysilane uniformly, transferring the pretreated reaction liquid to a hydrothermal reaction kettle, reacting at 165 ℃ for 16h, cooling to room temperature, taking out the reaction product, washing and drying the reaction product, and adding Zn5(OH)6(CO3)2The microcrystal is formed by assembling a plurality of nanosheets, the zinc carbonate microcrystal obtained by CS assistance has high thermal stability, and the multilayer ZCHO microcrystal is used for removing Cu in water2The law conforms to the Freundlich model.
Description
Technical field
The present invention relates to adsorbent of heavy metal ions in water preparation technical fields, are specifically related to a kind of multilayer shape alkali formula carbon
The preparation method and application of sour zinc crystallite.
Background technique
It is well known that by Pb2+、Cu2+、Co2+And Cd2+Water pollution caused by equal heavy metals, which has become, hinders constructing environment friend
The stumbling-block of good type society.The reason is that these pollutions would generally health to the mankind and the ecosystem generate various negative effects.
In these heavy metal ion, due to Cu2+Can be accumulated in human organ by food chain is considered as most dangerous weight
One of metal ion.Therefore, Cu in water body is effectively removed2+Cause more extensive concern.Chemical precipitation, ion exchange, film
The heavy metal ions of separation and the different technologies such as electrocoagulation and absorption in removal waste discharge have obtained wide answer
With.However, these technologies also have certain limitation, for example, chemical precipitation technology can generate toxic industrial by-products, ion
Switching technology is expensive.It has been reported that removing sulfuldioxide inside, adsorption technology then has reliability, economy, flexibility, anti-
The advantages that answering speed fast and easy to operate.Up to now, there are many new adsorbent, as nano material, ion blotting material,
Mesoporous material, carbon nanotube and magnetic Nano ion etc., have been used in heavy-metal ion removal field.Due to these micron orders or
Nanometer materials have excellent physics, chemistry, biological property and stiff stability, they can effectively large capacity absorption heavy metal from
Son is just received extensive attention as some new adsorbents.
Summary of the invention
For the technical problems in the prior art, the present invention provides one kind with chitosan (CS) be template, use
Multilayer shape basic zinc carbonate (ZCHO) crystallite has successfully been obtained in hydrothermal reaction at low temperature.Meanwhile it having studied it and removing Cu in water body2+Property
Can, it discusses it and removes Cu2+Possibility mechanism.
To achieve the goals above, the technical scheme adopted by the invention is as follows: a kind of multilayer shape basic zinc carbonate crystallite
Preparation method, steps are as follows:
1), chitosan-propionic acid colloidal solution preparation
The chitosan of 0.1g is added in the propionic acid aqueous solution for being 10% to 100mL weight percent, after stirring and dissolving
To chitosan-propionic acid colloidal solution；
2), reaction solution pre-processes
To the Na that chitosan-propionic acid colloidal solution of 5mL is added in reaction vessel, 50mL concentration is 0.5mol/L2CO3It is water-soluble
Liquid, the ZnCl that 50mL concentration is 0.1mol/L2The N- of aqueous solution and 2mL aminoethyl-gamma-aminopropyl-triethoxy-silane, are stirred
It mixes uniformly mixed；
3), hydro-thermal reaction
Pretreated reaction solution is transferred in hydrothermal reaction kettle, 16h is reacted at 165 DEG C, then cools to room temperature,
By washing, drying to obtain multilayer shape basic zinc carbonate crystallite after reaction product taking-up.
As the optimal technical scheme of preparation method of the invention, stirring and dissolving processing carries out at 35 DEG C in step 1),
It is stirred processing in step 2) to carry out at 40 DEG C, utilizes deionized water and anhydrous second after reaction product is taken out in step 3)
Alcohol alternately washs, and then drying obtains multilayer shape basic zinc carbonate crystallite at 60 DEG C.
Compared with prior art, beneficial effects of the present invention are shown:
With chitosan (CS) for biological template, with propionic acid for mild reaction medium, with N- aminoethyl-γ-three second of aminopropyl
Oxysilane is crosslinking agent, and multilayer shape basic zinc carbonate crystallite (Zn has successfully been prepared using hydrothermal reaction at low temperature5(OH)6
(CO3)2, ZCHO).It is characterized using structure, form and thermal property of the means such as XRD, SEM and TG to product, as a result table
It is bright, single Zn5(OH)6(CO3)2Crystallite is by several Zn5(OH)6(CO3)2What nanometer sheet assembled.Suitable CS is added to shape
Play the role of at multilayer shape ZCHO crystallite vital.Thermal gravimetric analysis results show the zinc carbonate crystallite that CS is assisted
Thermal stability is higher.Adsorption isotherm experiment shows that at room temperature multilayer shape ZCHO crystallite removes the Cu in water body2Rule meets
Freundlich model.
Detailed description of the invention
Fig. 1 is the XRD diagram that embodiment 1 prepares product.
Fig. 2 be embodiment 1 prepare product FE-SEM microphoto (a) and corresponding EDS power spectrum (b).
Fig. 3 is the crystallite thermogravimetric analysis that Examples 1 and 2 prepare product.
Fig. 4 is the FE-SEM microphoto that different chitosan additive amounts prepare product in embodiment 3.
Fig. 5 is the forming process schematic diagram of multilayer shape basic zinc carbonate crystallite.
Fig. 6 is adsorption isothermal curve in embodiment 4.
Fig. 7 is that different condition prepares ZCHO Adsorption of Cu in embodiment 42+The linear fit of adsorption isothermal curve.
Fig. 8 is ZCHO adsorption mechanism schematic diagram in embodiment 4.
Specific embodiment
Make with reference to embodiments with preparation method and application of the attached drawing to multilayer shape basic zinc carbonate crystallite of the invention
It is discussed further out.It prepares product to use respectively X-ray diffraction (XRD), scanning electron microscope (SEM, SU-8010) and thermogravimetric
Analyzer (TG) is characterized.
Embodiment 1
A kind of preparation method of multilayer shape basic zinc carbonate crystallite, steps are as follows:
1), chitosan-propionic acid colloidal solution preparation
The chitosan of 0.1g is added in the propionic acid aqueous solution for being 10% to 100mL weight percent, 35 DEG C is warming up to and stirs
Chitosan-propionic acid colloidal solution is obtained after mixing dissolution.
2), reaction solution pre-processes
To the Na that chitosan-propionic acid colloidal solution of 5mL is added in reaction vessel, 50mL concentration is 0.5mol/L2CO3It is water-soluble
Liquid, the ZnCl that 50mL concentration is 0.1mol/L2The N- of aqueous solution and 2mL aminoethyl-gamma-aminopropyl-triethoxy-silane rise
Temperature is uniformly mixed to 40 DEG C.
3), hydro-thermal reaction
Pretreated reaction solution is transferred in hydrothermal reaction kettle, 16h is reacted at 165 DEG C, then cools to room temperature,
Reaction product is alternately washed after taking out using deionized water and dehydrated alcohol, and then drying obtains multilayer shape alkali formula carbon at 60 DEG C
Sour zinc crystallite (ZCHO).
Fig. 1 is the XRD diagram that embodiment 1 prepares product, can be found from Fig. 1, the crystal property for the product that embodiment 1 obtains
Well, the main peaks in spectrogram and block Zn5(CO3)2(OH)6The base peak of (JCPDS 19-1458) corresponds to intact.Fig. 2 is real
Apply example 1 prepare product FE-SEM microphoto (a) and corresponding EDS power spectrum (b), single ZCHO is micro- as seen from Figure 2
Crystalline substance is in more layer structures, and each ZCHO crystallite is made of many ZCHO nanometer sheets (see Fig. 2 (a) illustration).Fig. 2 (b) is single
The power spectrum of a crystallite, it can be seen that other than two element of Zn and O, there are also a small amount of C, it is believed that be remaining a small amount of CS group
One of at.
Embodiment 2
Embodiment as a comparison, the preparation method is the same as that of Example 1, and difference is not add chitosan, N- aminoethyl-γ-ammonia
Propyl-triethoxysilicane.
Fig. 3 is that Examples 1 and 2 prepare the crystallite thermogravimetric analysis of product, by the comparative analysis of TG curve it is found that addition CS and
The ZCHO powder thermal stability that N- aminoethyl-gamma-aminopropyl-triethoxy-silane obtains increases, therefore, CS template auxiliary
The multilayer shape ZCHO crystallite thermal stability with higher that method obtains.
Embodiment 3
The present embodiment totally 4 groups of experiments, preparation method is same as Example 1, and difference is, the additive amount of chitosan is not
Together, the additive amount of chitosan is respectively 0g, 0.05g, 0.1g, 0.2g, prepares the FE-SEM microphoto of product successively such as Fig. 4 a-
Shown in d.As seen in Figure 4, under same experiment condition, when not adding CS template, obtained product is random
ZCHO nanometer sheet (see Fig. 4 (a)).As CS template usage amount gradually increases, self assembly will occur for ZCHO nano-sheet (see Fig. 4 b
And 4c).When CS usage amount is appropriate, multilayer shape ZCHO crystallite will be obtained (see Fig. 4 c).If CS usage amount is excessive, big will be obtained
Grain ZCHO crystallite (see Fig. 4 d).By the above results and analysis shows, the presence of CS and the usage amount form and knot final to ZCHO
Structure has a great impact.
In summary the forming process of multilayer shape basic zinc carbonate crystallite known to experimental result are as follows: firstly, in reaction system
Several ZCHO nanometer sheets generated are effectively assembled under CS template direction, obtain larger-size ZCHO micro-nano；Most
Afterwards, several ZCHO micro-nano recrystallizes occurring and grows up, and has obtained multilayer shape ZCHO crystallite.Referring specifically to shown in Fig. 5.
Embodiment 4
Batch adsorption experiment
In adsorption isotherm experiment, at 25 DEG C, the ZCHO (preparation of embodiment 1,2) of 0.5g is introduced, various concentration is housed
Cu2+In the beaker bottle of the 100mL solution of (50~600mg/L, pH=6.5), and inhaled with 160 turns of speed per minute stirring
Attached experiment.Enough time is adsorbed up to after balancing, take the supernatant of certain volume and emits light with inductance coupled plasma-atomic
Spectrometry (ICP-AES) measures Cu2+Equilibrium concentration Ce(mg/L), and according to formula (1) calculated equilibrium adsorbance (qe, mg/g).
C0(mg/L) Cu is represented2+Initial concentration, V (L) are the volumes of solution, and m (g) is the quality of ZCHO.
Isothermal adsorption research can provide some information and used absorption about adsorption capacity and surface nature
The affinity of agent, to more fully understand how adsorption process carries out.For this purpose, under the same conditions, comparative study addition and not
Two kinds of ZCHO crystallites of CS template acquisition are added to Cu in water body2+Absorption situation.Its result is as shown in Figure 6.It can be seen by Fig. 6
Out, Cu in water body is removed using the ZCHO crystallite energy larger capacity that CS template obtains2+。
By Freundlich (qe=KFCe 1/n) andRespectively to two after two model linearizations
Thermoisopleth is fitted processing, as a result respectively as shown in fig. 7, it is to obtain using CS (embodiment 1) and without using CS (embodiment 2)
The ZCHO Adsorption of Cu arrived2+The linear fit of adsorption isothermal curve.
It can be seen that from Fig. 7 (a), the ZCHO Adsorption of Cu obtained using CS template2+Model meets Freundlich model, and normal
Advise ZCHO Adsorption of Cu2+Then meet Langmuir model (Fig. 7 (b)).This illustrates the multilayer shape ZCHO crystallite absorption of CS auxiliary preparation
Cu2+For multilayer chemisorption, and common ZCHO nanometer sheet is then chemical monolayer absorption.
Fig. 8 is adsorption mechanism schematic diagram, and comprehensive analysis is it is found that containing certain in the ZCHO crystallite that CS assisting alcohol-hydrothermal method obtains
The CS template of amount, therefore, the surface ZCHO or bed boundary are other than rich in hydroxyl (- OH), and there are also amino (- NH2) functional group.When
After ZCHO crystallite is put into water body, Cu2+It will likely be with-the OH and-NH on the surface ZCHO or interface2Complex reaction occurs (see figure
8), to make Cu in aqueous solution2+It reduces rapidly.In addition, multilayer shape ZCHO crystallite has a large amount of interface, active suction can be used as
Therefore attached site removes Cu2+Ability will greatly improve.
The above content is just an example and description of the concept of the present invention, affiliated those skilled in the art
It makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from invention
Design or beyond the scope defined by this claim, be within the scope of protection of the invention.
Claims (5)
1. a kind of preparation method of multilayer shape basic zinc carbonate crystallite, which is characterized in that steps are as follows:
1), chitosan-propionic acid colloidal solution preparation
The chitosan of 0.1g is added in the propionic acid aqueous solution for being 10% to 100mL weight percent, shell is obtained after stirring and dissolving
Glycan-propionic acid colloidal solution；
2), reaction solution pre-processes
To the Na that chitosan-propionic acid colloidal solution of 5mL is added in reaction vessel, 50mL concentration is 0.5mol/L2CO3Aqueous solution,
50mL concentration is the ZnCl of 0.1mol/L2The N- of aqueous solution and 2mL aminoethyl-gamma-aminopropyl-triethoxy-silane, stirring are mixed
It closes uniform；
3), hydro-thermal reaction
Pretreated reaction solution is transferred in hydrothermal reaction kettle, 16h is reacted at 165 DEG C, then cools to room temperature, is reacted
By washing, drying to obtain multilayer shape basic zinc carbonate crystallite after product taking-up.
2. preparation method as described in claim 1, which is characterized in that stirring and dissolving processing carries out at 35 DEG C in step 1).
3. preparation method as described in claim 1, which is characterized in that be stirred in step 2) processing at 40 DEG C into
Row.
4. preparation method as described in claim 1, which is characterized in that utilize deionized water after reaction product is taken out in step 3)
It is alternately washed with dehydrated alcohol, then drying obtains multilayer shape basic zinc carbonate crystallite at 60 DEG C.
5. a kind of if the multilayer shape basic zinc carbonate crystallite of any one of claim 1-4 the method preparation is in adsorbing and removing water body
Middle Cu2+Application.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008701.4A CN109019662A (en) | 2018-08-29 | 2018-08-29 | Preparation method and application of multilayer basic zinc carbonate microcrystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008701.4A CN109019662A (en) | 2018-08-29 | 2018-08-29 | Preparation method and application of multilayer basic zinc carbonate microcrystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109019662A true CN109019662A (en) | 2018-12-18 |
Family
ID=64626106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811008701.4A Pending CN109019662A (en) | 2018-08-29 | 2018-08-29 | Preparation method and application of multilayer basic zinc carbonate microcrystal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109019662A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655797A (en) * | 2018-12-28 | 2020-01-07 | 辽宁瑞德公路科技有限公司 | Preparation method of environment-friendly rubber asphalt |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745192A (en) * | 2014-07-02 | 2015-07-01 | 济南大学 | Magnetic fluorescent double-function nanoion probe and preparation method thereof |
-
2018
- 2018-08-29 CN CN201811008701.4A patent/CN109019662A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745192A (en) * | 2014-07-02 | 2015-07-01 | 济南大学 | Magnetic fluorescent double-function nanoion probe and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| PEILI LIU ET AL.: "Chitosan assisted synthesis of multi-layered zinc carbonate hydroxides for massive removal of cu2+ from water", 《J.CHIL.CHEM.SOC.》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655797A (en) * | 2018-12-28 | 2020-01-07 | 辽宁瑞德公路科技有限公司 | Preparation method of environment-friendly rubber asphalt |
| CN110655797B (en) * | 2018-12-28 | 2021-06-18 | 辽宁瑞德公路科技有限公司 | Preparation method of environment-friendly rubber asphalt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dubey et al. | Application of common nano-materials for removal of selected metallic species from water and wastewaters: A critical review | |
| Rahmanian et al. | Preparation of zinc/iron layered double hydroxide intercalated by citrate anion for capturing Lead (II) from aqueous solution | |
| Raheem et al. | Rapid growth of MXene-based membranes for sustainable environmental pollution remediation | |
| Cao et al. | Adsorption of graphene for the removal of inorganic pollutants in water purification: a review | |
| Mwafy et al. | Novel laser-assisted method for synthesis of SnO2/MWCNTs nanocomposite for water treatment from Cu (II) | |
| Zhang et al. | Removal of toxic heavy metal ions (Pb, Cr, Cu, Ni, Zn, Co, Hg, and Cd) from waste batteries or lithium cells using nanosized metal oxides: A review | |
| Jin et al. | Removal of Cu (II) ions from aqueous solution by magnetic chitosan-tripolyphosphate modified silica-coated adsorbent: characterization and mechanisms | |
| Huo et al. | Adsorptive removal of Sr (II) from aqueous solution by polyvinyl alcohol/graphene oxide aerogel | |
| CN110404506B (en) | Preparation method and application of magnetic graphene oxide/sodium titanate composite material | |
| Zheng et al. | Anchored growth of highly dispersed LDHs nanosheets on expanded graphite for fluoride adsorption properties and mechanism | |
| Nezhad et al. | One-step Preparation of graphene oxide/polypyrrole magnetic nanocomposite and its application in the removal of methylene blue dye from aqueous solution | |
| Zhu et al. | Calcined Mg/Al layered double hydroxides as efficient adsorbents for polyhydroxy fullerenes | |
| Bi et al. | Self-assembly of immobilized titanate films with different layers for heavy metal ions removal from wastewater: Synthesis, modeling and mechanism | |
| Yan et al. | Evenly distribution of amorphous iron sulfides on reconstructed Mg-Al hydrotalcites for improving Cr (VI) removal efficiency | |
| Ogata et al. | Adsorption of phosphate ion in aqueous solutions by calcined cobalt hydroxide at different temperatures | |
| Sun et al. | Facile preparation of hydroxyl‑rich mesoporous magnesium silicate with excellent adsorption performance | |
| Natarajan et al. | Recent developments in metal nanoparticles functionalized nanocomposite adsorbents for heavy metals removal from wastewaters | |
| Honarmand et al. | Green synthesis of SnO 2-ZnO-eggshell nanocomposites and study of their application in removal of mercury (II) ions from aqueous solution | |
| Thomas et al. | Application of graphene and graphene compounds for environmental remediation | |
| Lu et al. | In situ oxidation and efficient simultaneous adsorption of arsenite and arsenate by Mg–Fe–LDH with persulfate intercalation | |
| CN114804206B (en) | Molybdenum sulfide nano material and preparation method and application thereof | |
| Haerizade et al. | Green removal of toxic Pb (II) from water by a novel and recyclable Ag/γ-Fe2O3@ r-GO nanocomposite | |
| Mallakpour et al. | Layered double hydroxide polymer nanocomposites for water purification | |
| He et al. | Cu2MoS4-based magnetic composites as effective adsorbent and photocatalyst for removal of organic contaminants in water | |
| Wang et al. | 3D magnetic flower-shaped yolk-shell like structure Fe3O4@ N-doped carbon@ MnO2 composites for the efficient removal of Re (VII) and As (V) |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |