CN113117728A - ZSM-5/Bi4O5Br2Preparation method of composite photocatalytic material - Google Patents
ZSM-5/Bi4O5Br2Preparation method of composite photocatalytic material Download PDFInfo
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- CN113117728A CN113117728A CN202110248033.8A CN202110248033A CN113117728A CN 113117728 A CN113117728 A CN 113117728A CN 202110248033 A CN202110248033 A CN 202110248033A CN 113117728 A CN113117728 A CN 113117728A
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 24
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims abstract description 20
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 10
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010457 zeolite Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000002808 molecular sieve Substances 0.000 claims abstract description 7
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- FBXVOTBTGXARNA-UHFFFAOYSA-N bismuth;trinitrate;pentahydrate Chemical compound O.O.O.O.O.[Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FBXVOTBTGXARNA-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims description 26
- 239000002244 precipitate Substances 0.000 claims description 21
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 12
- 239000012498 ultrapure water Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 238000003760 magnetic stirring Methods 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 abstract description 11
- 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 abstract description 7
- 229940043267 rhodamine b Drugs 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 230000000593 degrading effect Effects 0.000 abstract description 4
- 230000031700 light absorption Effects 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 229910052724 xenon Inorganic materials 0.000 abstract description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007810 chemical reaction solvent Substances 0.000 abstract 1
- 238000011056 performance test Methods 0.000 abstract 1
- 238000013064 process characterization Methods 0.000 abstract 1
- 238000003911 water pollution Methods 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 229910001868 water Inorganic materials 0.000 description 5
- 229910052797 bismuth Inorganic materials 0.000 description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000005215 recombination Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 230000027756 respiratory electron transport chain Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Classifications
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- B01J35/39—
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
- B01J29/48—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing arsenic, antimony, bismuth, vanadium, niobium tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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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
-
- 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
- C02F2101/345—Phenols
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention provides ZSM-5/Bi4O5Br2The preparation method of the composite photocatalytic material comprises the steps of preparing ZSM-5/Bi by using bismuth nitrate pentahydrate, a ZSM-5 zeolite molecular sieve and potassium bromide as raw materials and ethylene glycol as a reaction solvent through a simple and easy-to-operate room-temperature precipitation method4O5Br2A composite photocatalytic material. Using xenon lamp as light source, passing light of low wavelength (lambda) through filter<420nm) filtering off, and reacting on ZSM-5/Bi4O5Br2And carrying out a photocatalytic performance test on the composite photocatalytic material. By degrading rhodamine B and bisphenol A, through the degradation of rhodamine B and bisphenol A in the reaction processCharacterization of ZSM-5/Bi by resolution4O5Br2The photocatalytic performance of the composite photocatalytic material. The material has the advantages of high chemical stability, large specific surface area, unique electronic structure, strong light absorption capacity and the like, so that the material has wide application prospect in the aspect of water pollution treatment.
Description
Technical Field
The invention belongs to the field of preparation of photocatalytic materials, and particularly relates to ZSM-5/Bi4O5Br2A preparation method of a composite photocatalytic material.
Background
In sewage treatment, photocatalytic oxidation is a novel advanced oxidation technology, is developed on the basis of photochemical oxidation, has strong oxidation capability and no secondary pollution, can be carried out at normal temperature and normal pressure, and has the characteristics of environmental protection, energy conservation and the like.
Bismuth-based semiconductors are a unique new class of photocatalytic materials that have been developed in recent years. Due to the special structure of Bi atoms, the compound can easily form a layered structure, and a bismuth-based compound with visible light response capability is generated. Wherein Bi is in the bismuth-rich halide material4O5Br2The organic light-emitting diode has attracted attention due to high chemical stability, large specific surface area, unique electronic structure and high light absorption capacity, and researches show that the organic light-emitting diode has excellent performance in the degradation aspect of organic matters.
The zeolite has the characteristics of high specific surface area, high thermal stability, ecological friendliness and the like, and can delocalize excited electrons of a semiconductor, so that electron-hole recombination is inhibited, and photoproduction electron transfer is promoted. At present, ZSM-5 zeolite molecular sieves have been widely used as composite materials for photocatalytic reactions, so Bi is considered to be added4O5Br2The high-efficiency photocatalyst can be prepared by compounding with a ZSM-5 zeolite molecular sieve.
Disclosure of Invention
The invention aims to provide ZSM-5/Bi4O5Br2Preparation method of composite photocatalytic materialFor solving environmental problems.
The method comprises the following specific steps:
(1) dissolving bismuth nitrate pentahydrate in ethylene glycol, adding ZSM-5 under stirring, magnetically stirring, adding potassium bromide, and stirring until the potassium bromide is dissolved;
(2) sequentially and slowly adding ultrapure water and ammonia monohydrate into the solution obtained in the step (1), and magnetically stirring;
(3) filtering the reaction solution obtained in the step (2), collecting precipitate, and washing the precipitate;
(4) drying the precipitate obtained in the step (3), and grinding to obtain ZSM-5/Bi4O5Br2A composite photocatalytic material.
Preferably, the magnetic stirring time of the step (1) is 30 min.
Preferably, the magnetic stirring time of the step (2) is 4 h.
Preferably, the oven drying time is 12 h.
Preferably, the ratio of ZSM-5 zeolite molecular sieve in the charged feed: bi4O5Br2The mass fraction ratio is 0.25: 100. 0.75: 100. 1: 100. 2.5: 100. 5: 100, calculating.
ZSM-5/Bi prepared as described above4O5Br2The composite photocatalytic material can be used in the field of sewage treatment. The material is a composite of a zeolite molecular sieve and a bismuth oxyhalide semiconductor, and the existence of the zeolite molecular sieve effectively inhibits electron-hole recombination and promotes photoproduction electron transfer. The composite photocatalytic material has strong oxidizing ability, no secondary pollution, can be carried out at normal temperature and normal pressure, has the characteristics of environmental protection, energy conservation and the like, and provides a thought for solving the environmental problem.
The method has the advantages that:
(1) ZSM-5/Bi is prepared by a simple room temperature precipitation method4O5Br2The composite photocatalytic material is simple and easy to operate;
(2) prepared ZSM-5/Bi4O5Br2The composite photocatalytic material has the performance of effectively degrading rhodamine B (RhB) and bisphenol A (BPA) under visible light;
(3) prepared ZSM-5/Bi4O5Br2The composite photocatalytic material has better circulation stability, and the problem that the photocatalytic efficiency of the material is greatly reduced after primary photocatalysis is avoided;
(4) the application is simple, and only the ZSM-5/Bi to be prepared needs to be used4O5Br2The composite photocatalytic material powder is put into RhB or BPA with a certain concentration, and degradation of RhB or BPA can be carried out under visible light.
Drawings
FIG. 1: ZSM-5/Bi4O5Br2C/C of composite photocatalytic material for degrading RhB0Graph (a) and kinetic fit graph (b);
FIG. 2: ZSM-5/Bi4O5Br2C/C of composite photocatalytic material for degrading BPA0Graph (a) and kinetic fit graph (b);
FIG. 3: ZSM-5/Bi4O5Br2SEM picture of the composite photocatalytic material;
FIG. 4: ZSM-5/Bi4O5Br2XRD spectrogram of the composite photocatalytic material;
FIG. 5: ZSM-5/Bi4O5Br2A nitrogen adsorption isotherm (a) and a pore size distribution diagram (b) of the composite photocatalytic material;
FIG. 6: ZSM-5/Bi4O5Br2XPS full spectrum of the composite photocatalytic material;
FIG. 7: ZSM-5/Bi4O5Br2An ultraviolet-visible diffuse reflection spectrogram (a) and a forbidden band width chart (b) of the composite photocatalytic material;
FIG. 8: ZSM-5/Bi4O5Br2PL profile of the composite photocatalytic material;
FIG. 9: ZSM-5/Bi4O5Br2A photocurrent response graph of the composite photocatalytic material;
FIG. 10: ZSM-5/Bi4O5Br2EIS diagram of composite photocatalytic material.
Detailed Description
The present invention is further described in detail with reference to the following specific examples 1-5, which are intended to be illustrative, but not limiting, of the invention.
Example 1:
ZSM-5/Bi was prepared according to the following procedure4O5Br2The composite photocatalytic material is as follows:
(1) 2.425g of Bi (NO)3)3·5H2Dissolving O in 20mL of ethylene glycol, adding 0.0061g of ZSM-5 under stirring, magnetically stirring for 30min, adding 0.595g of KBr, and magnetically stirring until the O is dissolved;
(2) to the solution obtained in step (1), 8mL of ultrapure water and 2mL of NH were slowly added in this order3·H2O, magnetically stirring for 4 hours;
(3) centrifuging the reaction solution obtained in the step (2) at 4000r/min, collecting precipitates, and sequentially centrifuging and cleaning the precipitates for 3 times by using ultrapure water and absolute ethyl alcohol in turn;
(4) drying the precipitate obtained in the step (3) in a 60 ℃ oven for 12h, and grinding to obtain ZSM-5/Bi4O5Br2A composite photocatalytic material, designated 0.25 ZSM/BOB.
Example 2:
(1) 2.425g of Bi (NO)3)3·5H2Dissolving O in 20mL of ethylene glycol, adding 0.0182g of ZSM-5 under stirring, magnetically stirring for 30min, adding 0.595g of KBr, and magnetically stirring until the O is dissolved;
(2) to the solution obtained in step (1), 8mL of ultrapure water and 2mL of NH were slowly added in this order3·H2O, magnetically stirring for 4 hours;
(3) centrifuging the reaction solution obtained in the step (2) at 4000r/min, collecting precipitates, and sequentially centrifuging and cleaning the precipitates for 3 times by using ultrapure water and absolute ethyl alcohol in turn;
(4) drying the precipitate obtained in the step (3) in a 60 ℃ oven for 12h, and grinding to obtain ZSM-5/Bi4O5Br2A composite photocatalytic material, designated 0.75 ZSM/BOB.
Example 3:
(1) 2.425g of Bi (NO)3)3·5H2Dissolving O in 20mL of ethylene glycol, adding 0.0243g of ZSM-5 under stirring, magnetically stirring for 30min,adding 0.595g of KBr, and magnetically stirring until the mixture is dissolved;
(2) to the solution obtained in step (1), 8mL of ultrapure water and 2mL of NH were slowly added in this order3·H2O, magnetically stirring for 4 hours;
(3) centrifuging the reaction solution obtained in the step (2) at 4000r/min, collecting precipitates, and sequentially centrifuging and cleaning the precipitates for 3 times by using ultrapure water and absolute ethyl alcohol in turn;
(4) drying the precipitate obtained in the step (3) in a 60 ℃ oven for 12h, and grinding to obtain ZSM-5/Bi4O5Br2The composite photocatalytic material is marked as 1 ZSM/BOB.
Example 4:
(1) 2.425g of Bi (NO)3)3·5H2Dissolving O in 20mL of ethylene glycol, adding 0.0606g of ZSM-5 under stirring, stirring for 30min, adding 0.595g of KBr, and magnetically stirring until the mixture is dissolved;
(2) to the solution obtained in step (1), 8mL of ultrapure water and 2mL of NH were slowly added in this order3·H2O, magnetically stirring for 4 hours;
(3) centrifuging the reaction solution obtained in the step (2) at 4000r/min, collecting precipitates, and sequentially centrifuging and cleaning the precipitates for 3 times by using ultrapure water and absolute ethyl alcohol in turn;
(4) drying the precipitate obtained in the step (3) in a 60 ℃ oven for 12h, and grinding to obtain ZSM-5/Bi4O5Br2The composite photocatalytic material is marked as 2.5 ZSM/BOB.
Example 5:
(1) 2.425g of Bi (NO)3)3·5H2Dissolving O in 20mL of ethylene glycol, adding 0.1213g of ZSM-5 under stirring, magnetically stirring for 30min, adding 0.595g of KBr, and magnetically stirring until the O is dissolved;
(2) to the solution obtained in step (1), 8mL of ultrapure water and 2mL of NH were slowly added in this order3·H2O, magnetically stirring for 4 hours;
(3) centrifuging the reaction solution obtained in the step (2) at 4000r/min, collecting precipitates, and sequentially centrifuging and cleaning the precipitates for 3 times by using ultrapure water and absolute ethyl alcohol in turn;
(4) drying the precipitate obtained in the step (3) in a 60 ℃ oven for 12 hours, and grinding to obtain the productZSM-5/Bi4O5Br2The composite photocatalytic material is marked as 5 ZSM/BOB.
Under the irradiation of a xenon lamp, light below 420nm is filtered by using a filter plate, and the photocatalytic performance of the material is characterized by using the degradation efficiency of RhB and BPA.
Doping of ZSM-5 increases Bi4O5Br2The specific surface area of the photocatalytic material is beneficial to the adsorption of pollutants, thereby improving the photocatalytic activity. The zeolite doping can delocalize excited electrons of a semiconductor, so that electron-hole recombination is inhibited, photoproduction electron transfer is promoted, and the zeolite has excellent performance in the degradation aspect of organic matters. Due to ZSM-5/Bi4O5Br2The composite photocatalytic material shows better photocatalytic activity in a visible light area, so that organic pollutants can be efficiently degraded.
Claims (7)
1. ZSM-5/Bi4O5Br2The preparation method of the composite photocatalytic material is characterized by comprising the following specific steps:
1) dissolving bismuth nitrate pentahydrate in ethylene glycol, adding ZSM-5 under stirring, and adding potassium bromide under magnetic stirring until the potassium bromide is dissolved;
(2) sequentially and slowly adding ultrapure water and ammonia monohydrate into the solution obtained in the step (1), and magnetically stirring;
(3) filtering the reaction solution obtained in the step (2), collecting precipitate, and washing the precipitate;
(4) drying the precipitate obtained in the step (3), and grinding to obtain ZSM-5/Bi4O5Br2A composite photocatalytic material.
2. The method of claim 1, wherein: the magnetic stirring time in the step (1) is 30 min.
3. The method of claim 1, wherein: and (3) the magnetic stirring time in the step (2) is 4 h.
4. The method of claim 1, wherein: the drying time was 12 h.
5. The method of claim 1, wherein: the ZSM-5 zeolite molecular sieve in the added raw materials is as follows: bi4O5Br2The mass fraction ratio is 0.25: 100. 0.75: 100. 1: 100. 2.5: 100. 5: 100, calculating.
6. ZSM-5/Bi obtained by the process according to claim 14O5Br2A composite photocatalytic material.
7. ZSM-5/Bi obtained by the process according to claim 14O5Br2The composite photocatalytic material is applied to the field of sewage treatment.
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101653732A (en) * | 2009-09-29 | 2010-02-24 | 福州大学 | Molecular sieve loaded BiOX photocatalyst, preparation method and application thereof |
CN104525226A (en) * | 2014-12-25 | 2015-04-22 | 太原理工大学 | Synthesis method and application method of photocatalyst Bi4O5Br2 |
CN105833895A (en) * | 2016-05-05 | 2016-08-10 | 陈建峰 | Preparation method of modified BiOBr visible light catalyst |
CN106111181A (en) * | 2016-06-22 | 2016-11-16 | 佛山市高明绿化纳新材料有限公司 | Porous graphene zeolite BiOX catalysis material and preparation and application |
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2021
- 2021-03-07 CN CN202110248033.8A patent/CN113117728A/en active Pending
Patent Citations (4)
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CN101653732A (en) * | 2009-09-29 | 2010-02-24 | 福州大学 | Molecular sieve loaded BiOX photocatalyst, preparation method and application thereof |
CN104525226A (en) * | 2014-12-25 | 2015-04-22 | 太原理工大学 | Synthesis method and application method of photocatalyst Bi4O5Br2 |
CN105833895A (en) * | 2016-05-05 | 2016-08-10 | 陈建峰 | Preparation method of modified BiOBr visible light catalyst |
CN106111181A (en) * | 2016-06-22 | 2016-11-16 | 佛山市高明绿化纳新材料有限公司 | Porous graphene zeolite BiOX catalysis material and preparation and application |
Non-Patent Citations (3)
Title |
---|
QIZHAO WANG ET AL.: "Immobilized Heteropolyacids with zeolite (MCM-41) to enhance photocatalytic performance of BiOBr", 《MATERIALS LETTERS》 * |
伍艳辉等: "TiO2/ZSM-5复合光催化剂降解多环芳烃(PAHs)废水", 《环境科学与技术》 * |
李洁: "改性Bi4O5Br2光催化剂的制备及其可见光下降解回灌渗滤液的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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