CN109174198A - A kind of magnetic metal organogel load silver phosphate composite photocatalyst and its preparation method and application - Google Patents
A kind of magnetic metal organogel load silver phosphate composite photocatalyst and its preparation method and application Download PDFInfo
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- CN109174198A CN109174198A CN201811113817.4A CN201811113817A CN109174198A CN 109174198 A CN109174198 A CN 109174198A CN 201811113817 A CN201811113817 A CN 201811113817A CN 109174198 A CN109174198 A CN 109174198A
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- 229910000161 silver phosphate Inorganic materials 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 39
- 239000002184 metal Substances 0.000 title claims abstract description 39
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 29
- FJOLTQXXWSRAIX-UHFFFAOYSA-K silver phosphate Chemical compound [Ag+].[Ag+].[Ag+].[O-]P([O-])([O-])=O FJOLTQXXWSRAIX-UHFFFAOYSA-K 0.000 title claims abstract description 24
- 229940019931 silver phosphate Drugs 0.000 title claims abstract description 16
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 7
- 231100000719 pollutant Toxicity 0.000 claims abstract description 7
- 150000002892 organic cations Chemical class 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 5
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 109
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 29
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 239000007864 aqueous solution Substances 0.000 claims description 16
- 235000019441 ethanol Nutrition 0.000 claims description 13
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 claims description 11
- 229940043267 rhodamine b Drugs 0.000 claims description 11
- 239000002351 wastewater Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 7
- 238000000502 dialysis Methods 0.000 claims description 7
- QMKYBPDZANOJGF-UHFFFAOYSA-N benzene-1,3,5-tricarboxylic acid Chemical compound OC(=O)C1=CC(C(O)=O)=CC(C(O)=O)=C1 QMKYBPDZANOJGF-UHFFFAOYSA-N 0.000 claims description 6
- 239000007863 gel particle Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 4
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 4
- 239000002957 persistent organic pollutant Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 101710134784 Agnoprotein Proteins 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- MCPLVIGCWWTHFH-UHFFFAOYSA-L methyl blue Chemical compound [Na+].[Na+].C1=CC(S(=O)(=O)[O-])=CC=C1NC1=CC=C(C(=C2C=CC(C=C2)=[NH+]C=2C=CC(=CC=2)S([O-])(=O)=O)C=2C=CC(NC=3C=CC(=CC=3)S([O-])(=O)=O)=CC=2)C=C1 MCPLVIGCWWTHFH-UHFFFAOYSA-L 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 3
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 claims description 2
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 2
- 238000006552 photochemical reaction Methods 0.000 claims description 2
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 2
- 239000012498 ultrapure water Substances 0.000 claims description 2
- 241001062009 Indigofera Species 0.000 claims 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000006555 catalytic reaction Methods 0.000 abstract description 8
- 230000001699 photocatalysis Effects 0.000 abstract description 8
- 238000006731 degradation reaction Methods 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000007146 photocatalysis Methods 0.000 abstract description 5
- 239000010919 dye waste Substances 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000356 contaminant Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 17
- 238000002474 experimental method Methods 0.000 description 12
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- UJMDYLWCYJJYMO-UHFFFAOYSA-N benzene-1,2,3-tricarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1C(O)=O UJMDYLWCYJJYMO-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000975 dye Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000001045 blue dye Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229960000907 methylthioninium chloride Drugs 0.000 description 2
- NDYNABNWLRVCDO-UHFFFAOYSA-N phosphoric acid silver Chemical compound [Ag].P(O)(O)(O)=O NDYNABNWLRVCDO-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 229910000397 disodium phosphate Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
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- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/28—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of the platinum group metals, iron group metals or copper
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of magnetic metal organogel load silver phosphate composite photocatalysts and its preparation method and application, on the one hand pollutant is adsorbed on catalyst surface by the specific surface and porosity of metal organogel by such catalyst；On the other hand contaminant degradation is removed for simple inorganic matter using the photocatalysis of silver orthophosphate under radiation of visible light.By magnetic metal organogel in conjunction with visible light catalyst, absorption and light-catalysed synergistic effect can be not only played, but also the effect for being easily isolated and recycled, effectively improving photocatalytic activity may be implemented.Removal rate when by the composite catalyst applied to processing organic cation dye waste water 60min is up to 98%.The catalyst stability is good, and externally-applied magnetic field acts on lower quick separating recycling, and higher visible light catalysis activity is still kept after recycling three times.
Description
Technical field
The invention belongs to nanocomposite and environmental catalysis water-treatment technology fields, and being related to one kind can be used at waste water
Reason, be particularly applied to organic cation dye waste water magnetic metal organogel load silver phosphate composite photocatalyst and its
Preparation method and application.
Background technique
With the rapid development of industry, the type and quantity of waste water increase sharply, and water pollution is got worse.Photocatalysis technology
Advantage efficient with its, nontoxic, cheap the most frequently used, most efficient method as processing organic pollutant.In recent years, it is based on phosphoric acid
Silver (Ag3PO4) photocatalysis technology clear superiority is shown in terms of degradable organic pollutant.But Ag3PO4Photoetch it is existing
As and catalyst difficulty recycling problem but limit its large-scale application in the industrial production.In order to improve Ag3PO4Stabilization
Property and photocatalytic activity, while the technical problems such as separation and recovery of catalyst and operating cost height are solved, scientific research personnel has carried out greatly
The work of amount.
Metal organogel (MOGS) is a kind of new type functional material developed in recent years, it, which is combined, organises
Object and inorganic metal are closed, three-dimensional porous network is constructed by the coordination of metal ligand.The preparation condition of MOGS is mild, product
Usually there is bigger serface, multistage hole and functional functional group, have the application potential of water treatment agent.In view of above-mentioned excellent
Point introduces MOGS functional entity, and excellent absorption property can accelerate later period light-catalyzed reaction process, to improve catalysis effect
Rate；In addition, by excitation electric charge transfer can be occurred for the conduction band of inorganic semiconductor and MOGS material under visible light illumination, it can be effective
Ground inhibits the compound of electron-hole pair, further increases Ag3PO4Stability and photocatalytic activity.Therefore, the strategy is in Shui Chu
Managing technical field has wide development space and application prospect.
Traditional catalyst separation method is generally existing, and time-consuming, it is at high cost, be separated by solid-liquid separation the problems such as difficult.In catalysis material
Magnetic iron oxide (Fe is introduced in material3O4), catalyst quick separating not only may be implemented, reduce operating cost；More importantly
There are some researches prove Fe3O4Excellent electric conductivity can effectively facilitate the separation of electron-hole pair, the photocatalysis performance of reinforcing material,
But relevant experimental data also needs to improve and supplement.
Currently, not yet by Ag3PO4、Fe3O4And three kinds of functional material organic assemblings of metal organogel prepare complex light
The relevant report of catalysis material.
Summary of the invention
For Ag3PO4Photochemical catalyst is easy to the problem of photoetch and separation and recovery hardly possible, while in order to further enhance
Ag3PO4Photocatalysis performance, accelerate light-catalyzed reaction process.The present invention provides a kind of magnetic metal organogels to load phosphoric acid
Silver-colored composite photo-catalyst (Ag3PO4/Fe3O4/ MP), it is used for the degradation of organic dye waste water under visible light.Of the invention is another
Purpose is to provide a kind of preparation method of above-mentioned magnetic metal organogel load silver phosphate composite photocatalyst.The present invention is also
One purpose is to provide a kind of purposes of above-mentioned magnetic metal organogel load silver phosphate composite photocatalyst.
In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention are as follows:
A kind of preparation method of magnetic metal organogel load silver phosphate composite photocatalyst, comprising the following steps:
1) magnetic metal organogel (Fe3O4/ MP) preparation: by 20mg/mL Fe3O4 1 ~ 10mL of suspension, 0.3M nitric acid
Aluminium (Al (NO3)3·9H2O) 3 ~ 20mL of ethanol solution and 1,3,5- benzenetricarboxylic acid 3 ~ 20mL of (BTC) ethanol solution of 0.2M mixing,
It moves into reaction kettle and seals after mixing evenly at room temperature, the reaction was continued at 80 ~ 130 DEG C and 8 ~ 15h of aging, and product is gone through dialysis
Except remaining solvent and reactant, then freeze-dried obtain dry gel particle (Fe3O4/ MP)；
2) magnetic metal organogel loads silver phosphate composite photocatalyst (Ag3PO4/Fe3O4/ MP) preparation: 2.0 mg/mL
Fe3O40.35M AgNO is added dropwise in 10 ~ 100mL of/MP aqueous solution3Aqueous solution 10 ~ 100mL, N2It is sufficiently mixed under protection, then to body
0.5M Na is added dropwise in system2HPO4•12H2O 10 ~ 100mL of aqueous solution is protected from light continues 2 ~ 8h of stirring at room temperature, and product is through magnetic point
From, washing, alcohol wash, dry after obtain Ag3PO4/Fe3O4/ MP composite photo-catalyst.
In the preparation method: the aluminum nitrate (Al (NO3)3·9H2It O) may be ferric nitrate (Fe (NO3)3·
9H2) or chromic nitrate (Cr (NO O3)3·9H2One of) or a variety of, preferably Al (NO O3)3·9H2O；The solvent is ethyl alcohol
It (EtOH) may be dimethylformamide (DMF), preferably EtOH.
The Fe3O4Molar ratio with BTC is (0.1 ~ 5.0): 1；Prepared magnetic metal organogel loads phosphoric acid
Silver-colored composite photo-catalyst (Ag3PO4/Fe3O4/ MP) in, Fe3O4Mass fraction shared by/MP is 1% ~ 10%.
Magnetic metal organogel (the Fe3O4/ MP) using the remaining solvent of dialysis removal and complexant, it is used
The molecular cut off of bag filter is 6000 ~ 8000, and dialyzate used is ultrapure water, is carried out at room temperature；Product after dialysis
Freeze-dried machine is freeze-dried to obtain Fe3O4/ MP dry gel particle.
Magnetic metal organogel load silver phosphate composite photocatalyst the answering in processing organic dye waste water
With.
What the photochemical reaction utilized is visible light of the wave-length coverage in 400 ~ 700nm；Catalyst and pollutant
Mass ratio is (10 ~ 40): 1.Reaction temperature is environment temperature；PH is system pH itself, without adjusting.
The organic pollutant is organic cation dye rhodamine B, or in methyl blue or methylene blue
It is one or more.
The utility model has the advantages that compared with prior art, the invention has the following advantages that
1) composite photo-catalyst prepared by the present invention has both absorption and visible light catalytic dual function, to organic cation dye
The catalytic degradation of equal Recalcitrant chemicals has high efficiency.
2) composite catalyst prepared by the present invention has magnetism, can fast implement separation of solid and liquid by externally-applied magnetic field,
It can be recycled by simply cleaning.The Magneto separate of catalyst not only can save the time, but can reduce operation at
This.
3) the composite catalyst stability prepared by the present invention is good, and the catalytic activity after recycling repeatedly still keeps higher
It is horizontal.
4) the successful preparation and application of composite catalyst of the invention separately wards off footpath for the application of organic metal gel rubber material
Diameter incorporates newcomer for catalyst carrier material.
Detailed description of the invention
Fig. 1 is scanning electron microscope diagram, and a is Ag in Fig. 13PO4/Fe3O4The scanning electron microscope (SEM) photograph of/MP, b is in Fig. 1
Fe3O4The scanning electron microscope (SEM) photograph of/MP nanoparticle；
Fig. 2 is Ag3PO4/Fe3O4/ MP to the adsorption-photocatalytic degradation performance map of organic dyestuff rhodamine B in water, -60min ~
0min is adsorption process, and 0 ~ 90min is visible light photocatalytic degradation process；
Fig. 3 is Ag3PO4/Fe3O4/ MP catalytic degradation rhodamine B stable circulation performance figure.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Prepare embodiment 1
A kind of preparation method of magnetic metal organogel load silver phosphate composite photocatalyst, comprising the following steps:
1) magnetic metal organogel (Fe3O4/ MP) preparation: by 20mg/mL Fe3O4 Aqueous solution 1mL, 0.3M aluminum nitrate (Al
(NO3)3·9H2O) ethanol solution 5mL and 1,3,5- benzenetricarboxylic acid (BTC) ethanol solution 5mL of 0.2M mixing, stirring is equal at room temperature
Even rear move into reaction kettle seals, and the reaction was continued at 120 DEG C and aging 12h, and product is through the remaining solvent of dialysis removal and instead
Object is answered, then freeze-dried obtains dry gel particle, obtained Fe3O4In/MP, Fe3O4Mass fraction be 3%, be denoted as
Fe3O4(3%)/MP.
2) magnetic metal organogel loads silver phosphate composite photocatalyst (Ag3PO4/Fe3O4/ MP) preparation: 2.0mg/
mL Fe3O40.35M AgNO is added dropwise in/MP aqueous solution 10mL3Aqueous solution 10mL, N2It is sufficiently mixed under protection, then is dripped into system
Add 0.5M Na2HPO4•12H2O aqueous solution 20mL is protected from light continues to stir 4h at room temperature, product washes through Magneto separate, washing, alcohol,
Composite photo catalyst powder is obtained after drying.Prepared Ag3PO4/Fe3O4In/MP, Fe3O4/ MP mass fraction is 4%, is denoted as
Ag3PO4/Fe3O4(3%)/MP-4%.
Prepare embodiment 2
The 20mg/mL Fe being added unlike step 1) in preparation embodiment 13O4 Aqueous solution is 5mL, other experiment steps
Rapid same preparation embodiment 1, obtained Fe3O4In/MP, Fe3O4Mass fraction be 10%, be denoted as Fe3O4(10%)/MP.It is made
Standby Ag3PO4/Fe3O4In/MP, Fe3O4/ MP mass fraction is 4%, is denoted as Ag3PO4/Fe3O4(10%)/MP-4%.
Prepare embodiment 3
2.0 mg/mL Fe being added unlike step 2 in preparation embodiment 13O4/ MP aqueous solution 20mL, Qi Tashi
Step is tested with preparation embodiment 1, prepared Ag3PO4/Fe3O4In/MP, Fe3O4/ MP mass fraction is 8%, is denoted as Ag3PO4/
Fe3O4(3%)/MP-8%.
Prepare embodiment 4
2.0 mg/mL Fe being added unlike step 2 in preparation embodiment 13O4/ MP aqueous solution 27mL, Qi Tashi
Step is tested with preparation embodiment 1, prepared Ag3PO4/Fe3O4In/MP, Fe3O4/ MP mass fraction is 10%, is denoted as Ag3PO4/
Fe3O4(3%)/MP-10%.
Prepare embodiment 5
2.0 mg/mL Fe being added unlike step 2 in preparation embodiment 23O4/ MP aqueous solution 20mL, Qi Tashi
Step is tested with preparation embodiment 2, prepared Ag3PO4/Fe3O4In/MP, Fe3O4/ MP mass fraction is 8%, is denoted as Ag3PO4/
Fe3O4(10%)/MP-8%.
Prepare embodiment 6
2.0 mg/mL Fe being added unlike step 2 in preparation embodiment 23O4/ MP aqueous solution 27mL, Qi Tashi
Step is tested with preparation embodiment 1, prepared Ag3PO4/Fe3O4In/MP, Fe3O4/ MP mass fraction is 10%, is denoted as Ag3PO4/
Fe3O4(10%)/MP-10%.
Prepare embodiment 7
Etoh solvent is substituted for dimethylformamide (DMF) unlike step 1) in preparation embodiment 1, other experiment steps
Rapid same preparation embodiment 5.
The material of preparation is taken, with magnetic metal organogel particles Fe3O4/ MP is control, scanning electron microscope (SEM) photograph such as attached drawing 1
Shown, figure a is magnetic metal organogel load silver orthophosphate composite photocatalyst material Ag3PO4/Fe3O4/ MP, figure b are magnetic gold
Belong to organogel carrier granular Fe3O4/MP。
Application Example 1
Using prepared magnetic metal organogel load silver orthophosphate composite photocatalyst material to waste water containing rhdamine B into
Row visible light photocatalytic degradation: it is (the catalysis of 20mg/L rhodamine B that 20mg composite catalyst powder, which is added to, and fills 50mL concentration
In 100mL beaker of the mass ratio of agent and pollutant for 20:1) solution, ultrasonic disperse 1min obtains uniform dispersion.By this point
Dispersion liquid, which is placed under dark at room temperature, shakes 60min to reach absorption-desorption balance.Then it is cut using 250W high-pressure sodium lamp and 420nm
Only optical filter obtains simulated visible light irradiation, after the 0.8mL of interval sampling at regular intervals crosses 0.45 μm of miillpore filter, passes through purple
Outer spectrophotometer carries out qualitative and quantitative analysis to rhodamine B in maximum absorption wave strong point.Control and sky are done under the same terms
White experiment.
Application Example 2
Using prepared magnetic metal organogel load silver orthophosphate composite photocatalyst material to waste water containing rhdamine B into
Row visible light photocatalytic degradation: the catalyst amount used unlike Application Example 1 is 10mg(catalyst and pollutant
Mass ratio is 10:1), other experimental procedures are the same as Application Example 1.
Application Example 3
Using prepared magnetic metal organogel load silver orthophosphate composite photocatalyst material to waste water containing rhdamine B into
Row visible light photocatalytic degradation: the pollutant rhodamine B concentration used unlike Application Example 1 is 10mg/L(catalyst
Mass ratio with pollutant is 40:1), other experimental procedures are the same as Application Example 1.
Application Example 4
Silver orthophosphate composite photocatalyst material is loaded using prepared magnetic metal organogel unlike Application Example 1
Visible light photocatalytic degradation is carried out to containing methylene blue dye wastewater, other experimental procedures are the same as Application Example 1.
Application Example 5
Silver orthophosphate composite photocatalyst material is loaded using prepared magnetic metal organogel unlike Application Example 1
Visible light photocatalytic degradation is carried out to waste water containing methyl blue dye, other experimental procedures are the same as Application Example 1.
With pure phosphoric acid silver (Ag3PO4) it is control, with metal organogel (MP) for blank, material is to rhodamine B in water
Adsorption-photocatalytic degradation experimental result is as shown in Fig. 2, and -60min ~ 0min is placed in the adsorption process of dark place in Fig. 2, with MP
The increase of content, the absorption property enhancing of material, it may be assumed that MP > Ag3PO4/Fe3O4/MP‒10% > Ag3PO4/Fe3O4/MP‒3% >
Ag3PO4, Ag when reaching adsorption equilibrium3PO4/Fe3O4/ MP is to the removal rate of rhodamine B in water up to 31%；0 ~ 90min is that light is urged
Change degradation process, photocatalytic activity power follows following sequence: Ag3PO4/Fe3O4/MP‒3% > Ag3PO4/Fe3O4/MP‒10%
> Ag3PO4> MP, to the removal rate of rhodamine B in water up to 98% when degrading to 60min.
Application Example 6
Using prepared magnetic metal organogel load silver orthophosphate composite photocatalyst material to waste water containing rhdamine B into
Row visible light photocatalytic degradation circulation experiment, stable circulation performance are as shown in Fig. 3.Circulation experiment three times is carried out altogether, per preceding primary
After experiment, catalyst is separated by solid-liquid separation (as shown in photo in attached drawing 3) by externally-applied magnetic field, is gone using washing for several times
Except surface residue can carry out next round degradation experiment, circulation experiment rear catalyst still may be used to the removal rate of rhodamine B three times
Reach 70% or more.
Embodiments described above is merely to illustrate the present invention and is not the limitation to conception and technical scheme of the invention, this
Field it is to be appreciated by one skilled in the art that still can modify to the present invention or replace on an equal basis, should all be of the invention
Within protection scope.
Claims (7)
1. a kind of magnetic metal organogel load silver phosphate composite photocatalyst and its preparation method and application, feature exists
In: the following steps are included:
1) magnetic metal organogel (Fe3O4/ MP) preparation: by 20mg/mL Fe3O41 ~ 10mL of aqueous solution, 0.3M aluminum nitrate
(Al (NO3)3·9H2O) 3 ~ 20mL of ethanol solution and 1,3,5- benzenetricarboxylic acid 3 ~ 20mL of (BTC) ethanol solution of 0.2M mixing, room
It moves into reaction kettle and seals after mixing evenly under temperature, the reaction was continued at 80 ~ 130 DEG C and 8 ~ 15h of aging, and product is removed through dialysis
Remaining solvent and reactant, then freeze-dried obtain dry gel particle (Fe3O4/ MP)；
2) magnetic metal organogel loads silver phosphate composite photocatalyst (Ag3PO4/Fe3O4/ MP) preparation: 2.0 mg/mL
Fe3O40.35M AgNO is added dropwise in 10 ~ 100mL of/MP aqueous solution3Aqueous solution 10 ~ 100mL, N2It is sufficiently mixed under protection, then to body
0.5M Na is added dropwise in system2HPO4•12H2O 10 ~ 100mL of aqueous solution continues to be protected from light 2 ~ 8h of stirring at room temperature, and product is through magnetic point
From, washing, alcohol wash, dry after obtain Ag3PO4/Fe3O4/ MP composite photo-catalyst.
2. preparation method described in claim 1, it is characterised in that: the aluminum nitrate (Al (NO3)3·9H2O) may be
Ferric nitrate (Fe (NO3)3·9H2) or chromic nitrate (Cr (NO O3)3·9H2One of) or a variety of, preferably Al (NO O3)3·9H2O；
The solvent is ethyl alcohol (EtOH) or dimethylformamide (DMF), preferably EtOH.
3. preparation method described in claim 1, it is characterised in that: the Fe3O4Molar ratio with BTC is (0.1 ~ 5.0):
1；Prepared magnetic metal organogel loads silver phosphate composite photocatalyst (Ag3PO4/Fe3O4/ MP) in, Fe3O4/ MP institute
The mass fraction accounted for is 1% ~ 10%.
4. preparation method described in claim 1, it is characterised in that: magnetic metal organogel (Fe3O4/ MP) utilize dialysis
Remaining solvent and reactant are removed, the molecular cut off of bag filter used is 6000 ~ 8000, and dialyzate used is ultrapure
Water carries out at room temperature；The freeze-dried machine of product after dialysis is freeze-dried to obtain Fe3O4/ MP dry gel particle.
5. magnetic metal organogel load silver phosphate composite photocatalyst described in claim 1 is in processing organic wastewater
Using.
6. magnetic metal organogel described in claim 5 loads silver phosphate composite photocatalyst in processing organic wastewater
Using, it is characterised in that: what the photochemical reaction utilized is visible light of the wave-length coverage in 400 ~ 700nm；Catalyst with
The mass ratio of pollutant is (10 ~ 40): 1；Reaction temperature is environment temperature；PH is system pH itself, without adjusting.
7. organic pollutant described in claim 5 is organic cation dye rhodamine B, or methyl blue or methylene
One of indigo plant is a variety of.
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| CN105396619A (en) * | 2015-12-11 | 2016-03-16 | 华南理工大学 | MIL-100(Fe) silver phosphate composite photocatalyst, preparation and applications |
| CN106111198A (en) * | 2016-06-17 | 2016-11-16 | 三峡大学 | A kind of preparation method and applications of the catalyst of metal organic gel materials loaded Ag based on MIL 100 (Al) |
| CN106423275A (en) * | 2016-11-09 | 2017-02-22 | 福州大学 | Magnetic composite material used for degrading antibiotics in water through visible light |
| CN107497490A (en) * | 2017-08-04 | 2017-12-22 | 三峡大学 | A kind of CdS-loaded catalyst preparation of metal organogel and its application in terms of photolysis water hydrogen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105396619A (en) * | 2015-12-11 | 2016-03-16 | 华南理工大学 | MIL-100(Fe) silver phosphate composite photocatalyst, preparation and applications |
| CN106111198A (en) * | 2016-06-17 | 2016-11-16 | 三峡大学 | A kind of preparation method and applications of the catalyst of metal organic gel materials loaded Ag based on MIL 100 (Al) |
| CN106423275A (en) * | 2016-11-09 | 2017-02-22 | 福州大学 | Magnetic composite material used for degrading antibiotics in water through visible light |
| CN107497490A (en) * | 2017-08-04 | 2017-12-22 | 三峡大学 | A kind of CdS-loaded catalyst preparation of metal organogel and its application in terms of photolysis water hydrogen |
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