CN106111114B - A kind of In2O3/Bi2Sn2O7Composite visible light catalyst and preparation method thereof - Google Patents
A kind of In2O3/Bi2Sn2O7Composite visible light catalyst and preparation method thereof Download PDFInfo
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- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000003054 catalyst Substances 0.000 title claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 239000002131 composite material Substances 0.000 claims abstract description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 31
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 20
- 239000012498 ultrapure water Substances 0.000 claims description 20
- 235000019441 ethanol Nutrition 0.000 claims description 18
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 16
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000000137 annealing Methods 0.000 claims description 10
- 239000003643 water by type Substances 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 239000011941 photocatalyst Substances 0.000 abstract description 4
- 238000001027 hydrothermal synthesis Methods 0.000 abstract 1
- 238000001802 infusion Methods 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000002105 nanoparticle Substances 0.000 description 8
- 238000007146 photocatalysis Methods 0.000 description 5
- 230000001699 photocatalysis Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 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 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229940071182 stannate Drugs 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/18—Arsenic, antimony or bismuth
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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
- 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
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- 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
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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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- 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
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- 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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Abstract
The invention discloses a kind of type In2O3/Bi2Sn2O7Composite visible light catalyst and preparation method thereof, the composite visible light catalyst include Bi2Sn2O7Particle and Cubic In2O3Block；The present invention uses hydro-thermal method and infusion process, that is, utilizes Bi2Sn2O7As matrix and In (NO)3Mixture prepares In2O3/Bi2Sn2O7Composite photo-catalyst；This composite photo-catalyst can reduce the compound of electron hole pair, can effectively improve the utilization rate of sunlight；It is an advantage of the invention that：Simple for process, controllability is good, and harmony is high.
Description
Technical field
The present invention relates to composite visible light catalyst and preparation method thereof, more particularly to a kind of In2O3/Bi2Sn2O7It is compound can
Light-exposed catalyst and preparation method thereof.
Background technology
As problem of environmental pollution is increasingly severe, people are also faced with huge energy crisis, solve current serious
Problem of environmental pollution and energy shortage problem it is extremely urgent.Wherein, Photocatalitic Technique of Semiconductor can degrade organic contamination
Object and reduction carbon dioxide, have been considered to the important means for solving current environment pollution problem.At present about photocatalysis performance
And its excellent material of photoelectric conversion efficiency is concentrated mainly on TiO2、ZnO、SnO2And the wide bandgap semiconductors such as niobates, usually
The band-gap energy of these semiconductors can only absorb ultraviolet portion in 3eV or more, this greatly affected catalysis material
Catalytic performance.Research about semi-conducting material is there are mainly two types of method：First, reducing the spacing of band-gap energy by doping；Second is that
By preparing composite material, promote efficiently separating for electron-hole pair.
In recent years since part bismuth-based oxide and its compound (bismuth stannate) are because having layer structure and Bi 6s and 02p rails
The hydridization in road makes valence band move up, and to make it have smaller band gap and the discrete feature of valence band, this is beneficial to photoproduction
Electronics is migrated from valence band to conduction band, can decompose water and effective degradable organic pollutant under visible light, and becoming one kind has development latent
The catalysis material of power.And In2O3As a kind of photosensitizer, be commonly used to it is compound with wide band gap semiconducter, to improve the visible of material
Photocatalysis performance.
In photocatalyst applications, it is mainly two kinds that energy band matches that composite material, which is made, in N-type semiconductor material
Substance is combined, and to act to reduce electrons and holes recombination rate, material mainly has TiO2, ZnO, ZrO2, SnO2With
SiO2Deng.Bi2Sn2O7Although nano particle can absorb visible light, light excitation is formed by the compound of electrons and holes pair
Rate is higher.
Invention content
N-type semiconductor In is utilized the purpose of the present invention is to provide a kind of2O3With N-type semiconductor Bi2Sn2O7It is prepared into
In2O3/Bi2Sn2O7Composite visible light catalyst and preparation method thereof.
In order to achieve the above objectives, In of the present invention2O3/Bi2Sn2O7Composite visible light catalyst is 10-20nm's by grain size
Bi2Sn2O7Nano particle is attached to 0.1 μm of Cubic In2O3It is constituted on block.
The preparation method of the present invention is as follows：
1)Bi2Sn2O7The preparation of predecessor
By the Bi (NO of 3~5mol3)3It is dissolved in the salpeter solution of a concentration of 1mol/L of 30~60mL, stirs to obtain solution A；
By the K of 3~5mol2Sn2O3It is dissolved in 30~60mL5 DEG C of ultra-pure water and obtains solution B；
Solution B is added dropwise in solution A and stirs evenly to obtain mixture C；It is added dropwise 1~3mol/L's into mixture C
NaOH solution centrifuges after being 10~12 to pH, is used in combination ultra-pure water and absolute ethyl alcohol to be respectively washed, Bi is dried to obtain at 75 DEG C2Sn2O7Before
Drive object；
2)Bi2Sn2O7Preparation
The CTAB (cetyl trimethylammonium bromide) of 0.2~0.6g is dissolved in 15~30mL ultra-pure waters and is stirred evenly
Solution D；By Bi2Sn2O7Predecessor is distributed to stirred evenly in solution D after, be added dropwise 0.1~0.3mol/L NaOH to pH be 10
~12 obtain mixture E；Mixture E is transferred in the polytetrafluoroethylliner liner of 50mL, keeps for 24 hours, being cooled to room temperature at 180 DEG C
Afterwards, it is respectively washed with 100~200mL ultra-pure waters and 200~400mL absolute ethyl alcohols, 75 DEG C dry to obtain Bi2Sn2O7；
3)In2O3/Bi2Sn2O7Preparation
By the In (NO of 0.1~1.4g3)3It is dissolved in 10~50mL absolute ethyl alcohols, stirs evenly to obtain solution F；By Bi2Sn2O7
It is distributed in solution F, stirs 5h, heated at 80 DEG C, the product after solvent evaporated is placed in Muffle furnace, 400-500 DEG C of annealing
3h is cooled to room temperature to obtain In2O3/Bi2Sn2O7Composite visible light catalyst.
The In of the present invention2O3/Bi2Sn2O7Composite visible light catalyst is by Bi2Sn2O7Nano particle is distributed to In (NO3)3
Ethanol solution in, then by annealing so that Bi2Sn2O7Nano particle is attached to Cubic In2O3On block surface, to shape
At composite material, light-catalyzed reaction can reach efficiently separating for electron-hole when carrying out.
Since in photocatalyst applications, it is mainly that energy band matches that composite material, which is made, in N-type semiconductor material
Two kinds of substances are combined, to act to reduce electrons and holes recombination rate.Bi2Sn2O7It can although nano particle can absorb
It is light-exposed, but light excites the recombination rate for being formed by electrons and holes pair higher, therefore to increase to sunlight in larger scope
Efficiently use and promote efficiently separating for electrons and holes, by the present invention in that with Cubic In2O3With Bi2Sn2O7Nanometer
Grain progress is compound, that is, utilizes annealing method by Bi2Sn2O7Nano particle is attached to Cubic In2O3Band structure is prepared on block
The In to match2O3/Bi2Sn2O7Composite visible light catalyst.It refers to Bi that the band structure, which matches,2Sn2O7Valence band and lead
Band position and In2O3Conduction band and valence band location can form typical II type heterojunction structure, by by Bi2Sn2O7Nanometer
Grain is attached to Cubic In2O3On block, in Bi2Sn2O7With In2O3Contact surface on form activated centre, Bi2Sn2O7Nanometer
After grain light excitation, electrons are transferred to In on conduction band2O3Conduction band on, and In2O3Light excites the hole generated in valence band
Bi can be transferred to2Sn2O7Valence band on, these active materials can realize have to water pollutant by different reaction process
Effect degradation, that is, realize efficiently separating for electrons and holes, improve the photocatalysis efficiency of semi-conducting material.Ensureing Bi2Sn2O7It is right
In the case that visible light still has absorption, additionally it is possible to so that visible absorption range is broadened and that electrons and holes efficiently separate is compound
Catalyst.
The present invention is all made of wet chemical method and prepares In2O3/Bi2Sn2O7Composite visible light catalyst, it is simple for process, controllably
Property it is good, harmony is high.
Description of the drawings
Fig. 1 is In prepared by the present invention2O3/Bi2Sn2O7Composite visible light catalyst structural schematic diagram；That wherein disperses is black
Point is Bi2Sn2O7Nano particle, Cubic block are In2O3。
Fig. 2 is the 0.1In under visible light photograph2O3/Bi2Sn2O7Composite visible light catalyst and 0.1In2O3/Bi2Sn2O7It is mixed
Degradation curve of the closing light catalyst to rhodamine B.
Specific implementation mode
Embodiment 1：
1)Bi2Sn2O7The preparation of predecessor
By the Bi (NO of 5mol3)3It is dissolved in the salpeter solution of a concentration of 1mol/L of 50mL, stirs to obtain solution A；
By the K of 5mol2Sn2O3It is dissolved in 50mL5 DEG C of ultra-pure water and obtains solution B；
Solution B is added dropwise in solution A and stirs evenly to obtain mixture C；The NaOH of 2mol/L is added dropwise into mixture C
Solution centrifuges after being 12 to pH, is used in combination ultra-pure water and absolute ethyl alcohol to be respectively washed, Bi is dried to obtain at 75 DEG C2Sn2O7Predecessor；
2)Bi2Sn2O7Preparation
The CTAB (cetyl trimethylammonium bromide) of 0.5g is dissolved in 25mL ultra-pure waters and stirs evenly to obtain solution D；It will
Bi2Sn2O7Predecessor is distributed to stirred evenly in solution D after, be added dropwise 0.1mol/L NaOH to pH be 10 mixture E；It will
Mixture E is transferred in the polytetrafluoroethylliner liner of 50mL, is kept at 180 DEG C for 24 hours, after being cooled to room temperature, with 100~200mL
Ultra-pure water and 200~400mL absolute ethyl alcohols are respectively washed, and 75 DEG C dry to obtain Bi2Sn2O7；
3)In2O3/Bi2Sn2O7Preparation
By the In (NO of 0.1g3)3It is dissolved in 10mL absolute ethyl alcohols, stirs evenly to obtain solution F；By Bi2Sn2O7It is distributed to solution
In F, 5h is stirred, is heated at 80 DEG C, the product after solvent evaporated is placed in Muffle furnace, and 400 DEG C of annealing 3h are cooled to room temperature
In2O3/Bi2Sn2O7Composite visible light catalyst.
Prepared In as seen from Figure 12O3/Bi2Sn2O7Composite visible light catalyst is 10-20nm's by grain size
Bi2Sn2O7Nano particle is attached to 0.1 μm or so of Cubic In2O3It is constituted on block.
Comparative example 1
1)Bi2Sn2O7Preparation
By 5mol Bi (NO3)3It is dissolved in the salpeter solution of 50mL1mol/L, stirs 1h, solution A；By the K of 5mol2Sn2O3
It is dissolved in 50mL5 DEG C of ultra-pure water, solution B；Solution B is added dropwise in A and obtains mixture A；After stirring 0.5h, 2mol/L is added dropwise
Mixture A is transferred in the polytetrafluoroethylliner liner of 50mL, is kept at 180 DEG C until the pH of mixture A is 12 by NaOH solution
For 24 hours, it after being cooled to room temperature, is respectively washed three times with 200mL ultra-pure waters and 200mL absolute ethyl alcohols, 75 DEG C of drying 5h obtain product
B。
2)In2O3Preparation
By the In (NO of 5mmol3)3It is dissolved in 50mL absolute ethyl alcohols, stirs 1h, solution C；It heats, is evaporated molten at 80 DEG C
Product C is placed in Muffle furnace by agent, product C, 400-500 DEG C of annealing 3h.It is cooled to room temperature, it is spare.
3)In2O3/Bi2Sn2O7Preparation
By the In of 0.15g2O3With the Bi of 1g2Sn2O7It is added in 10mL ethyl alcohol and obtains mixture D；Ultrasonic 0.5h, is then stirred
3h is heated, solvent evaporated at 80 DEG C, product E.
Product E is annealed 3h at 400-500 DEG C, room temperature is down to and obtains In2O3-Bi2Sn2O7Mix photochemical catalyst.
Embodiment 1 and comparative example are subjected to photocatalysis performance test, compare In as seen from Figure 22O3-Bi2Sn2O7Machinery
It is blended, In2O3And Bi2Sn2O7Material, 0.1In2O3/Bi2Sn2O7Composite material exhibits go out best photocatalysis performance.
Embodiment 2：
1)Bi2Sn2O7The preparation of predecessor
By the Bi (NO of 3mol3)3It is dissolved in the salpeter solution of a concentration of 1mol/L of 30mL, stirs to obtain solution A；
By the K of 4mol2Sn2O3It is dissolved in 40mL5 DEG C of ultra-pure water and obtains solution B；
Solution B is added dropwise in solution A and stirs evenly to obtain mixture C；The NaOH of 1mol/L is added dropwise into mixture C
Solution centrifuges after being 11 to pH, is used in combination ultra-pure water and absolute ethyl alcohol to be respectively washed, Bi is dried to obtain at 75 DEG C2Sn2O7Predecessor；
2)Bi2Sn2O7Preparation
The CTAB (cetyl trimethylammonium bromide) of 0.3g is dissolved in 18mL ultra-pure waters and stirs evenly to obtain solution D；It will
Bi2Sn2O7Predecessor is distributed to stirred evenly in solution D after, be added dropwise 0.2mol/L NaOH to pH be 12 mixture E；It will
Mixture E is transferred in the polytetrafluoroethylliner liner of 50mL, is kept at 180 DEG C for 24 hours, after being cooled to room temperature, with 100~200mL
Ultra-pure water and 200~400mL absolute ethyl alcohols are respectively washed, and 75 DEG C dry to obtain Bi2Sn2O7；
3)In2O3/Bi2Sn2O7Preparation
By the In (NO of 0.5g3)3It is dissolved in 20mL absolute ethyl alcohols, stirs evenly to obtain solution F；By Bi2Sn2O7It is distributed to solution
In F, 5h is stirred, is heated at 80 DEG C, the product after solvent evaporated is placed in Muffle furnace, and 450 DEG C of annealing 3h are cooled to room temperature
In2O3/Bi2Sn2O7Composite visible light catalyst.
Embodiment 3：
1)Bi2Sn2O7The preparation of predecessor
By the Bi (NO of 4mol3)3It is dissolved in the salpeter solution of a concentration of 1mol/L of 40mL, stirs to obtain solution A；
By the K of 3.5mol2Sn2O3It is dissolved in 35mL5 DEG C of ultra-pure water and obtains solution B；
Solution B is added dropwise in solution A and stirs evenly to obtain mixture C；The NaOH of 3mol/L is added dropwise into mixture C
Solution centrifuges after being 10 to pH, is used in combination ultra-pure water and absolute ethyl alcohol to be respectively washed, Bi is dried to obtain at 75 DEG C2Sn2O7Predecessor；
2)Bi2Sn2O7Preparation
The CTAB (cetyl trimethylammonium bromide) of 0.6g is dissolved in 30mL ultra-pure waters and stirs evenly to obtain solution D；It will
Bi2Sn2O7Predecessor is distributed to stirred evenly in solution D after, be added dropwise 0.3mol/L NaOH to pH be 11 mixture E；It will
Mixture E is transferred in the polytetrafluoroethylliner liner of 50mL, is kept at 180 DEG C for 24 hours, after being cooled to room temperature, with 100~200mL
Ultra-pure water and 200~400mL absolute ethyl alcohols are respectively washed, and 75 DEG C dry to obtain Bi2Sn2O7；
3)In2O3/Bi2Sn2O7Preparation
By the In (NO of 0.8g3)3It is dissolved in 30mL absolute ethyl alcohols, stirs evenly to obtain solution F；By Bi2Sn2O7It is distributed to solution
In F, 5h is stirred, is heated at 80 DEG C, the product after solvent evaporated is placed in Muffle furnace, and 500 DEG C of annealing 3h are cooled to room temperature
In2O3/Bi2Sn2O7Composite visible light catalyst.
Embodiment 4：
1)Bi2Sn2O7The preparation of predecessor
By the Bi (NO of 3.5mol3)3It is dissolved in the salpeter solution of a concentration of 1mol/L of 45mL, stirs to obtain solution A；
By the K of 3mol2Sn2O3It is dissolved in 30mL5 DEG C of ultra-pure water and obtains solution B；
Solution B is added dropwise in solution A and stirs evenly to obtain mixture C；It is added dropwise 1.5mol/L's into mixture C
NaOH solution centrifuges after being 11 to pH, is used in combination ultra-pure water and absolute ethyl alcohol to be respectively washed, Bi is dried to obtain at 75 DEG C2Sn2O7Forerunner
Object；
2)Bi2Sn2O7Preparation
The CTAB (cetyl trimethylammonium bromide) of 0.2g is dissolved in 15mL ultra-pure waters and stirs evenly to obtain solution D；It will
Bi2Sn2O7Predecessor is distributed to stirred evenly in solution D after, be added dropwise 0.3mol/L NaOH to pH be 10 mixture E；It will
Mixture E is transferred in the polytetrafluoroethylliner liner of 50mL, is kept at 180 DEG C for 24 hours, after being cooled to room temperature, with 100~200mL
Ultra-pure water and 200~400mL absolute ethyl alcohols are respectively washed, and 75 DEG C dry to obtain Bi2Sn2O7；
3)In2O3/Bi2Sn2O7Preparation
By the In (NO of 1.0g3)3It is dissolved in 40mL absolute ethyl alcohols, stirs evenly to obtain solution F；By Bi2Sn2O7It is distributed to solution
In F, 5h is stirred, is heated at 80 DEG C, the product after solvent evaporated is placed in Muffle furnace, and 480 DEG C of annealing 3h are cooled to room temperature
In2O3/Bi2Sn2O7Composite visible light catalyst.
Embodiment 5：
1)Bi2Sn2O7The preparation of predecessor
By the Bi (NO of 4.5mol3)3It is dissolved in the salpeter solution of a concentration of 1mol/L of 60mL, stirs to obtain solution A；
By the K of 4.5mol2Sn2O3It is dissolved in 60mL5 DEG C of ultra-pure water and obtains solution B；
Solution B is added dropwise in solution A and stirs evenly to obtain mixture C；It is added dropwise 2.5mol/L's into mixture C
NaOH solution centrifuges after being 12 to pH, is used in combination ultra-pure water and absolute ethyl alcohol to be respectively washed, Bi is dried to obtain at 75 DEG C2Sn2O7Forerunner
Object；
2)Bi2Sn2O7Preparation
The CTAB (cetyl trimethylammonium bromide) of 0.4g is dissolved in 20mL ultra-pure waters and stirs evenly to obtain solution D；It will
Bi2Sn2O7Predecessor is distributed to stirred evenly in solution D after, be added dropwise 0.1mol/L NaOH to pH be 12 mixture E；It will
Mixture E is transferred in the polytetrafluoroethylliner liner of 50mL, is kept at 180 DEG C for 24 hours, after being cooled to room temperature, with 100~200mL
Ultra-pure water and 200~400mL absolute ethyl alcohols are respectively washed, and 75 DEG C dry to obtain Bi2Sn2O7；
3)In2O3/Bi2Sn2O7Preparation
By the In (NO of 1.4g3)3It is dissolved in 50mL absolute ethyl alcohols, stirs evenly to obtain solution F；By Bi2Sn2O7It is distributed to solution
In F, 5h is stirred, is heated at 80 DEG C, the product after solvent evaporated is placed in Muffle furnace, and 420 DEG C of annealing 3h are cooled to room temperature
In2O3/Bi2Sn2O7Composite visible light catalyst.
Claims (1)
1. a kind of In2O3/Bi2Sn2O7The preparation method of composite visible light catalyst, it is characterised in that：
1)Bi2Sn2O7The preparation of predecessor
By the Bi (NO of 3~5mol3)3It is dissolved in the salpeter solution of a concentration of 1mol/L of 30~60mL, stirs to obtain solution A；
By the K of 3~5mol2Sn2O3It is dissolved in the ultra-pure water of 5 DEG C of 30~60mL and obtains solution B；
Solution B is added dropwise in solution A and stirs evenly to obtain mixture C；The NaOH that 1~3mol/L is added dropwise into mixture C is molten
Liquid centrifuges after being 10~12 to pH, is used in combination ultra-pure water and absolute ethyl alcohol to be respectively washed, Bi is dried to obtain at 75 DEG C2Sn2O7Predecessor；
2)Bi2Sn2O7Preparation
The CTAB of 0.2~0.6g is dissolved in 15~30mL ultra-pure waters and stirs evenly to obtain solution D；By Bi2Sn2O7Predecessor disperses
To after being stirred evenly in solution D, the NaOH to pH of 0.1~0.3mol/L is added dropwise and obtains mixture E for 10~12；Mixture E is turned
Move on in the polytetrafluoroethylliner liner of 50mL, kept at 180 DEG C for 24 hours, after being cooled to room temperature, with 100~200mL ultra-pure waters and
200~400mL absolute ethyl alcohols are respectively washed, and 75 DEG C dry to obtain Bi2Sn2O7；
3)In2O3/Bi2Sn2O7Preparation
By the In (NO of 0.1~1.4g3)3It is dissolved in 10~50mL absolute ethyl alcohols, stirs evenly to obtain solution F；By Bi2Sn2O7Dispersion
Into solution F, 5h is stirred, is heated at 80 DEG C, the product after solvent evaporated is placed in Muffle furnace, 400-500 DEG C of annealing 3h, drop
In is obtained after to room temperature2O3/Bi2Sn2O7Composite visible light catalyst.
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| CN107497459B (en) * | 2017-10-13 | 2020-09-01 | 广东石油化工学院 | Bi2Sn2O7/Bi24O31Br10Preparation method of composite visible light catalyst |
| CN108126713B (en) * | 2018-02-02 | 2019-07-05 | 辽宁大学 | It is the photochemical catalyst and its preparation method and application in solid conduction channel based on pole narrow-band semiconductor |
| CN108057452B (en) * | 2018-02-02 | 2019-07-05 | 辽宁大学 | Sunlight photocatalysis agent of electronics and its preparation method and application is efficiently shifted in a kind of self assembly |
| CN108273522B (en) * | 2018-02-02 | 2019-07-05 | 辽宁大学 | A kind of Z-type semiconductor light-catalyst and its preparation method and application with trapezium structure |
| CN108554427B (en) * | 2018-04-12 | 2020-02-21 | 江苏大学 | In2O3/BiOI semiconductor composite photocatalyst and preparation method and application thereof |
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| CN102080262A (en) * | 2010-12-21 | 2011-06-01 | 中国科学院上海硅酸盐研究所 | Visible light catalytic material, and preparation method and application thereof |
| CN105597765A (en) * | 2016-02-26 | 2016-05-25 | 大连理工大学 | In2O3/ZnFe2O4 nanometer heterojunction composite photocatalytic material and preparation method thereof |
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| CN102080262A (en) * | 2010-12-21 | 2011-06-01 | 中国科学院上海硅酸盐研究所 | Visible light catalytic material, and preparation method and application thereof |
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