CN108686684A - A kind of Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst and preparation method thereof - Google Patents
A kind of Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst and preparation method thereof Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910016516 CuFe2O4 Inorganic materials 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008139 complexing agent Substances 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 230000005389 magnetism Effects 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- SXTLQDJHRPXDSB-UHFFFAOYSA-N copper;dinitrate;trihydrate Chemical group O.O.O.[Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O SXTLQDJHRPXDSB-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 229910016874 Fe(NO3) Inorganic materials 0.000 claims description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 235000011187 glycerol Nutrition 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 4
- 239000011976 maleic acid Substances 0.000 claims description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 4
- 235000004237 Crocus Nutrition 0.000 claims description 2
- 241000596148 Crocus Species 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- DXKGMXNZSJMWAF-UHFFFAOYSA-N copper;oxido(oxo)iron Chemical compound [Cu+2].[O-][Fe]=O.[O-][Fe]=O DXKGMXNZSJMWAF-UHFFFAOYSA-N 0.000 claims description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical group [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 150000001879 copper Chemical class 0.000 claims 1
- 238000002845 discoloration Methods 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 13
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 238000007146 photocatalysis Methods 0.000 abstract description 5
- 239000011941 photocatalyst Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000010189 synthetic method Methods 0.000 abstract description 2
- 238000001027 hydrothermal synthesis Methods 0.000 abstract 2
- 238000006555 catalytic reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000003980 solgel method Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 239000003643 water by type Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 6
- 238000004042 decolorization Methods 0.000 description 6
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical compound [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 description 6
- 150000002823 nitrates Chemical class 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 4
- 229940012189 methyl orange Drugs 0.000 description 4
- 239000001048 orange dye Substances 0.000 description 4
- CBACFHTXHGHTMH-UHFFFAOYSA-N 2-piperidin-1-ylethyl 2-phenyl-2-piperidin-1-ylacetate;dihydrochloride Chemical compound Cl.Cl.C1CCCCN1C(C=1C=CC=CC=1)C(=O)OCCN1CCCCC1 CBACFHTXHGHTMH-UHFFFAOYSA-N 0.000 description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 3
- 239000011975 tartaric acid Substances 0.000 description 3
- 235000002906 tartaric acid Nutrition 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229940073609 bismuth oxychloride Drugs 0.000 description 1
- IPNGSXQUQIUWKO-UHFFFAOYSA-N bismuth;fluoro hypofluorite Chemical compound [Bi].FOF IPNGSXQUQIUWKO-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- OZKCXDPUSFUPRJ-UHFFFAOYSA-N oxobismuth;hydrobromide Chemical compound Br.[Bi]=O OZKCXDPUSFUPRJ-UHFFFAOYSA-N 0.000 description 1
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical group Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/128—Halogens; Compounds thereof with iron group metals or platinum group metals
-
- B01J35/33—
-
- B01J35/39—
Abstract
The invention discloses a kind of Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst and preparation method thereof belongs to catalysis material technical field.It is mainly characterized by having synthesized Bi by hydro-thermal method4O5I2With magnetic CuFe2O4Composite visible light catalyst forms heterojunction structure, is conducive to photo-generate electron-hole and efficiently separates, and then significantly improves photocatalysis performance.Preparation process is:(1) by sol-gel method, CuFe is prepared under the effect of different complexing agents2O4Nano-photocatalyst.(2) by hydrothermal synthesis method, Bi is prepared by solvent of glycerine4O5I2With magnetic CuFe2O4Composite visible light catalyst.The light induced electron of the visible light catalyst and hole can migrate, mutual transition is carried out between different energy levels, show excellent visible light catalytic performance, and the composite photo-catalyst synthesized has good magnetism, its magnetic simple recycling can be utilized, avoids secondary pollution, synthetic method simple and easy to control, it is of low cost, there is good application prospect.
Description
Technical field
The invention belongs to environment pollution technology fields, and in particular to a kind of Bi4O5I2With magnetic CuFe2O4Composite visible light is urged
Agent and preparation method.
Background technology
In recent years, environmental pollution and energy shortage getting worse, and the sun is that a huge, remote, endless energy is precious
Library, it is seen that photochemical catalyst is expected to achieve the purpose that water pollutant of degrading, and a kind of recyclable multiple utilization using sunlight
Photochemical catalyst can realize environmentally protective purpose.
Bismuth oxyiodide:Some researches show that, Bi based compound has a good photocatalytic activity, wherein bismuth oxyfluoride and
There is bismuth oxychloride photocatalytic activity, bismuth oxybromide and bismuth oxyiodide to have photocatalytic activity under visible light under ultraviolet light.
[Bi2O2]2+Layer and double X-There are stronger internal electric fields between layer, photo-generate electron-hole can be promoted to efficiently separating, because
This photocatalysis efficiency higher.Wherein bismuth oxyiodide has narrower energy gap, spectral response range wider.Bismuth catalyst series have
Many kinds, such as BiOI, Bi4O5I2,Bi7O9I3, wherein Bi4O5I2With better visible light catalytic effect.
Coppe ferrite:CuFe2O4It is Cu2+Replace Fe3O4In Fe2+The metal oxide of formation has spinel structure.Iron
Sour copper have good physics and chemical property, magnetic performance, air-sensitive performance, absorption property and catalytic performance etc. with
It is studied and is applied.Since the energy gap of coppe ferrite is about 1.4eV, visible light is responded, is commonly used to and other yuan
Element and semiconductors coupling improve its photocatalytic activity.
Invention content
The purpose of the present invention is to provide a kind of Bi4O5I2With magnetic CuFe2O4Composite photocatalyst and preparation method thereof,
Synthetic method is simple and easy to control and of low cost, and synthesized composite photo-catalyst has good photocatalysis performance, and utilizes iron
The simple recycling of photochemical catalyst may be implemented in the excellent magnetism of sour copper.
The present invention provides a kind of Bi of degradation organic pollutants4O5I2With magnetic CuFe2O4Composite photocatalyst,
Have good catalytic activity, preparation method as follows under visible light:
(1) sol-gal process prepares nanometer CuFe2O4:A certain amount of molysite is weighed respectively and mantoquita is dissolved in deionized water
In, then the two is mixed, complexing agent and surfactant are added into mixed liquor, is allowed to dissolve a;Then, water bath method
Moisture promotes complex polymerisation to generate the gel of clear viscous;It is dried to obtain xerogel later, is fully ground, finally says
Obtained product calcining, obtains the powdered nanometer CuFe of smoky gray2O4。
(2)Bi4O5I2With magnetic CuFe2O4The preparation of composite visible light catalyst:A liquid:Weigh a certain amount of Bi
(NO3)3·5H2O is dissolved in solvent, slightly hot to make it dissolve, and stirs half an hour at room temperature;B liquid:A certain amount of KI is weighed, is dissolved in
Deionized water, stirring are allowed to dissolve;In whipping process, B liquid is slowly added dropwise into the A liquid for having stirred half an hour with dropper,
Solution colour becomes crocus from colourless, continues to stir, and then weighs a certain amount of nanometer CuFe prepared2O4, it is added above-mentioned
In solution, mixed solution is then transferred to the stainless steel reaction under high pressure containing polytetrafluoroethyllining lining by ultrasonic disperse certain time
It is reacted in kettle, is cooled to room temperature after reaction, gained sample is centrifuged, is washed with water and absolute ethyl alcohol, then
It is being dried in vacuo, grinding obtains Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst.
In the step (1), molysite is Fe(NO3)39H2O, and mantoquita is Gerhardite, Fe(NO3)39H2O and three hydrations
The molar ratio of copper nitrate is 2: 1.
In the step (1), the bath temperature of water bath method moisture is 80 DEG C, and it is to calcine 2h at 850 DEG C to calcine.
In the step (1), complexing agent is one or more in citric acid, tartaric acid, maleic acid.
In the step (2), Bi (NO3)3·5H2The molar ratio of O and KI is 1: 1.
In the step (2), ultrasonic time 30min.
In the step (2), the condition reacted in the stainless steel autoclave containing polytetrafluoroethyllining lining is at 130 DEG C
React 12h.
In the step (2), vacuum drying condition is 80 DEG C of dry 6h in vacuum drying chamber.
Bi made from the invention4O5I2With magnetic CuFe2O4Composite visible light catalyst has good appearance structure and can
Light-exposed catalytic activity, and can Magneto separate, convenient for recycle.
Specific implementation mode:
Embodiment 1:N (nine water ferric nitrates): the mixed solution that the ratio between mole of n (nitrate trihydrate copper) is 2: 1 is prepared, first
Nine water ferric nitrates of 4.0400g (0.0100mol) are weighed, and 40mL deionized waters are added, then weigh 1.2080g again
Simultaneously 10mL deionized waters are added in (0.0050mol) nitrate trihydrate copper, and after the two is mixed, 0.0300mol is added into mixed liquor
Citric acid and 0.5000g Surfactant CTABs, it is complete to be allowed to dissolving;Subsequent 80 DEG C of water bath method moisture, promotes complex
Polymerization generates the gel of clear viscous;Next moisture is dried at 120 DEG C, obtains xerogel, be fully ground, will finally obtained
Product calcine 2h at 850 DEG C, obtain the powdered nano ferrous acid copper of smoky gray.The Photocatalytic Decoloration methyl under sunlight irradiation
Orange waste water from dyestuff 3h, percent of decolourization 50%.
Embodiment 2:N (nine water ferric nitrates): the mixed solution that the ratio between mole of n (nitrate trihydrate copper) is 2: 1 is prepared, first
Nine water ferric nitrates of 4.0400g (0.0100mol) are weighed, and 40mL deionized waters are added, then weigh 1.2080g again
Simultaneously 10mL deionized waters are added in (0.0050mol) nitrate trihydrate copper, and after the two is mixed, 0.0300mol is added into mixed liquor
Tartaric acid and 0.5000g Surfactant CTABs, it is complete to be allowed to dissolving;Subsequent 80 DEG C of water bath method moisture, promotes complex
Polymerization generates the gel of clear viscous;Next moisture is dried at 120 DEG C, obtains xerogel, be fully ground, will finally obtained
Product calcine 2h at 850 DEG C, obtain the powdered nano ferrous acid copper of smoky gray.The Photocatalytic Decoloration methyl under sunlight irradiation
Orange waste water from dyestuff 3h, percent of decolourization 60%.
Embodiment 3:N (nine water ferric nitrates): the mixed solution that the ratio between mole of n (nitrate trihydrate copper) is 2: 1 is prepared, first
Nine water ferric nitrates of 4.0400g (0.0100mol) are weighed, and 40mL deionized waters are added, then weigh 1.2080g again
Simultaneously 10mL deionized waters are added in (0.0050mol) a certain amount of nitrate trihydrate copper, after the two is mixed, are added into mixed liquor
It is complete to be allowed to dissolving for the maleic acid and 0.5000g Surfactant CTABs of 0.0300mol;Subsequent 80 DEG C of water bath method moisture promotees
Complex polymerisation is set to generate the gel of clear viscous;Next moisture is dried at 120 DEG C, obtains xerogel, be fully ground, most
Obtained product is calcined into 2h at 850 DEG C afterwards, obtains the powdered nano ferrous acid copper of smoky gray.The photocatalysis under sunlight irradiation
Decolourize methyl orange dye waste water 3h, percent of decolourization 58%.
Embodiment 4:A liquid:0.3880g(0.8mmol)Bi(NO3)3·5H2O, is dissolved in 38mL glycerine, 60 DEG C slightly it is hot make it is molten
Solution, stirs half an hour at room temperature;B liquid:0.1328g (0.8mmol) KI, is dissolved in 2mL deionized waters, and stirring is allowed to dissolve;It is stirring
It mixes down, B liquid is slowly added dropwise into the A liquid for having stirred half an hour with dropper, solution colour becomes orange solution from colourless, after
Continuous stirring 2min, is transferred in stainless steel autoclaves of the 100mL containing polytetrafluoroethyllining lining;Then it is by mass fraction
40% amount weighs the nano ferrous acid copper prepared as complexing agent using citric acid, is added in above-mentioned solution, reacts 12h at 130 DEG C,
It is cooled to room temperature after reaction, gained sample is centrifuged, respectively washed three times with water and absolute ethyl alcohol, be then dried in vacuo
80 DEG C of dry 6h in case, grinding obtain orange-yellow Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst.In solar irradiation
Penetrate lower Photocatalytic Decoloration methyl orange dye waste water 3h, percent of decolourization 81%.
Embodiment 6:A liquid:0.3880g(0.8mmol)Bi(NO3)3·5H2O, is dissolved in 38mL glycerine, 60 DEG C slightly it is hot make it is molten
Solution, stirs half an hour at room temperature;B liquid:0.1328g (0.8mmol) KI, is dissolved in 2mL deionized waters, and stirring is allowed to dissolve;It is stirring
It mixes down, B liquid is slowly added dropwise into the A liquid for having stirred half an hour with dropper, solution colour becomes orange solution from colourless, after
Continuous stirring 2min, is transferred in stainless steel autoclaves of the 100mL containing polytetrafluoroethyllining lining;Then it is by mass fraction
40% amount weighs the nano ferrous acid copper prepared as complexing agent using tartaric acid, is added in above-mentioned solution, reacts 12h at 130 DEG C,
It is cooled to room temperature after reaction, gained sample is centrifuged, respectively washed three times with water and absolute ethyl alcohol, be then dried in vacuo
80 DEG C of dry 6h in case, grinding obtain orange-yellow Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst.In solar irradiation
Penetrate lower Photocatalytic Decoloration methyl orange dye waste water 3h, percent of decolourization 93%.
Embodiment 7:A liquid:0.3880g(0.8mmol)Bi(NO3)3·5H2O, is dissolved in 38mL glycerine, 60 DEG C slightly it is hot make it is molten
Solution, stirs half an hour at room temperature;B liquid:0.1328 (0.8mmol) KI, is dissolved in 2mL deionized waters, and stirring is allowed to dissolve;It is stirring
Under, B liquid is slowly added dropwise into the A liquid for having stirred half an hour with dropper, solution colour becomes orange solution from colourless, continues
2min is stirred, is transferred in stainless steel autoclaves of the 100mL containing polytetrafluoroethyllining lining, it is 40% then to press mass fraction
Amount weigh the coppe ferrite using maleic acid as complexing agent, be added in above-mentioned solution, 12h reacted at 130 DEG C, it is cold after reaction
But to room temperature, gained sample is centrifuged, is respectively washed three times with water and absolute ethyl alcohol, then 80 DEG C of dryings in vacuum drying chamber
6h, grinding obtain orange-yellow Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst.Photocatalysis is de- under sunlight irradiation
Color methyl orange dye waste water 3h, percent of decolourization 84%.
Claims (9)
1. a kind of Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst, it is characterised in that:The visible light catalyst is by nanometer
CuFe2O4With the Bi with special layer structure4O5I2It is combined, wherein nanometer CuFe2O4Mass fraction be 10%-
50%.
2. Bi according to claim 14O5I2With magnetic CuFe2O4Composite visible light catalyst, it is characterized in that this compound is urged
Agent has magnetism, recyclable multiple utilization.
3. Bi according to claim 1 or 24O5I2With magnetic CuFe2O4The preparation method of composite visible light catalyst, it is special
Sign includes the following steps:
(1) sol-gal process prepares nanometer CuFe2O4:A certain amount of molysite is weighed respectively and mantoquita is dissolved in deionized water, so
The two is mixed afterwards, complexing agent and surfactant are added into mixed liquor, it is complete to be allowed to dissolving;Then, water bath method moisture,
Complex polymerisation is promoted to generate the gel of clear viscous;It is dried to obtain xerogel later, is fully ground, finally says
Product is calcined, and the powdered nanometer CuFe of smoky gray is obtained2O4。
(2)Bi4O5I2With magnetic CuFe2O4The preparation of composite visible light catalyst:A liquid:Weigh a certain amount of Bi (NO3)3·5H2O
It is dissolved in solvent, it is slightly hot to make it dissolve, half an hour is stirred at room temperature;B liquid:A certain amount of KI is weighed, deionized water is dissolved in, is stirred
It mixes and is allowed to dissolve;In whipping process, B liquid is slowly added dropwise into the A liquid for having stirred half an hour with dropper, solution colour is by nothing
Discoloration is crocus, continues to stir, and then weighs a certain amount of nanometer CuFe prepared2O4, it is added in above-mentioned solution, ultrasound
Disperse certain time, then mixed solution is transferred in the stainless steel autoclave containing polytetrafluoroethyllining lining and is carried out instead
It answers, is cooled to room temperature after reaction, gained sample is centrifuged, is washed with water and absolute ethyl alcohol, be then dried in vacuo,
Grinding obtains Bi4O5I2With magnetic CuFe2O4Composite visible light catalyst.
4. preparation method according to claim 3, which is characterized in that in step (1), molysite is Fe(NO3)39H2O, copper
Salt is Gerhardite, and the molar ratio of Fe(NO3)39H2O and Gerhardite is 2: 1.
5. preparation method according to claim 3, which is characterized in that in step (1), the bath temperature of water bath method moisture
It it is 80 DEG C, it is to calcine 2h at 850 DEG C to calcine.
6. preparation method according to claim 3, which is characterized in that in step (1), complexing agent is selected from citric acid, winestone
It is one or more in acid, maleic acid.
7. preparation method according to claim 3, which is characterized in that step (1) surfactant is CTAB.
8. preparation method according to claim 3, which is characterized in that in step (2), solvent is glycerine, Bi (NO3)3·
5H2The molar ratio of O and KI is 1: 1, ultrasonic time 30min.
9. preparation method according to claim 3, which is characterized in that in step (2), containing polytetrafluoroethyllining lining not
The condition reacted in rust steel autoclave is that 12h is reacted at 130 DEG C, and vacuum drying condition is 80 DEG C in vacuum drying chamber
Dry 6h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110127768A (en) * | 2019-05-30 | 2019-08-16 | 何宏健 | A kind of CuFe2O4The preparation method of ion battery electrode materials |
| CN110975902A (en) * | 2019-12-26 | 2020-04-10 | 重庆科技学院 | Preparation method of composite photocatalyst for photocatalytic degradation of organic matters in oilfield flowback fluid |
| CN111822010A (en) * | 2020-07-02 | 2020-10-27 | 青岛科技大学 | ZnFe2O4/Bi7O9I3Magnetic composite photocatalytic material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127768A (en) * | 2019-05-30 | 2019-08-16 | 何宏健 | A kind of CuFe2O4The preparation method of ion battery electrode materials |
| CN110975902A (en) * | 2019-12-26 | 2020-04-10 | 重庆科技学院 | Preparation method of composite photocatalyst for photocatalytic degradation of organic matters in oilfield flowback fluid |
| CN110975902B (en) * | 2019-12-26 | 2023-04-07 | 重庆科技学院 | Preparation method of composite photocatalyst for photocatalytic degradation of organic matters in oilfield flowback fluid |
| CN111822010A (en) * | 2020-07-02 | 2020-10-27 | 青岛科技大学 | ZnFe2O4/Bi7O9I3Magnetic composite photocatalytic material and preparation method thereof |
| CN111822010B (en) * | 2020-07-02 | 2022-11-15 | 青岛科技大学 | ZnFe 2 O 4 /Bi 7 O 9 I 3 Magnetic composite photocatalytic material and preparation method thereof |
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