CN103433052A - Visible-light-responsive photocatalyst Ba2WCuO6 and preparation method thereofore - Google Patents
Visible-light-responsive photocatalyst Ba2WCuO6 and preparation method thereofore Download PDFInfo
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- CN103433052A CN103433052A CN2013103995695A CN201310399569A CN103433052A CN 103433052 A CN103433052 A CN 103433052A CN 2013103995695 A CN2013103995695 A CN 2013103995695A CN 201310399569 A CN201310399569 A CN 201310399569A CN 103433052 A CN103433052 A CN 103433052A
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Abstract
The invention discloses a visible-light-responsive photocatalyst Ba2WCuO6 and a preparation method thereof. The chemical composition formula of the photocatalyst is Ba2WCuO6. The invention also discloses a preparation method of the material. The preparation method disclosed by the invention is simple and low in cost; and the prepared photocatalyst has the advantages of excellent catalytic property and high stability, has the function of decomposing harmful chemical substances under visible light irradiation, and thus, has favorable application prospects.
Description
Technical field
The present invention relates to a kind of visible light-responded photocatalyst Ba
2wCuO
6and preparation method thereof, belong to inorganic field of photocatalytic material.
Background technology
Along with socioeconomic development, people more and more pay close attention to for the energy and ecological environment, solve energy shortage and problem of environmental pollution and be realize sustainable development, improve people's living standard and safeguard national security in the urgent need to.
From phase late 1970s, people proposed to utilize in the photochemical catalyst decomposition water and atmosphere in agricultural chemicals and the organic matter such as odorant, and application examples such as self-cleaning that scribble the surface of solids of photochemical catalyst.The principle of light-catalyzed reaction is that photochemical catalyst is after the photon absorbed higher than its band-gap energy, hole and electronics have been generated, these holes and electronics carry out respectively oxidation reaction and reduction reaction, reach the purpose of decomposing harmful chemical, organic-biological matter and sterilization.Photochemical catalyst has many kinds, and wherein most representative is titanium dioxide (TiO
2), utilized titanium dioxide in water and the agricultural chemicals in atmosphere and the organic matters such as odorant decomposed, yet the band gap of titanium dioxide is 3.2eV, only under the ultraviolet irradiation shorter than 400nm, just can show activity, can only be indoor or the local work of uviol lamp arranged, almost can not utilize visible ray, this has limited the use of titanium dioxide optical catalyst greatly.
Consider the practicality of photochemical catalyst in decomposing harmful substances, utilizing sunshine is indispensable as light source.Irradiation is near sunshine medium wavelength visible light intensity maximum 500nm on earth's surface, the energy of the visible region that wavelength is 400nm ~ 750nm is approximately 43% of sunshine gross energy, so for efficient utilization, the R and D of bismuth series photocatalyst have obtained a series of great achievements, and bismuthous compound is as BiVO
4, Bi
2moO
6, Bi
2mo
2o
9, Bi
2mo
3o
12and Bi
2wO
4be reported under visible ray and there is good absorption.A series of niobiums (tantalum) hydrochlorate photochemical catalyst is widely studied owing to having higher photocatalytic activity.For example, niobate photocatalyst Pb
3nb
4o
13, BiNbO
4and Bi
2mNbO
7(M=Al, Ga, In, Y, rare earth element or Fe) etc. with niobium potassium compound oxide photocatalyst as KNbO
3, KNb
3o
8, K
4nb
6o
17and K
6nb
10.6o
30deng all thering is photocatalysis performance preferably.
Although photocatalysis research has been carried out the several years, but at present report to have visible light-responded photochemical catalyst kind still very limited, still exist that light conversion efficiency is low, poor stability and the problem such as the spectrum respective range is narrow, so research and develop the new visible light-responded high efficiency photocatalyst that has, be very necessary.We are to Ba
2wCuO
6, Sr
2wCuO
6and Ca
2wCuO
6carry out Photocatalytic Performance Study Deng composite oxides, found that Ba
2wCuO
6there is excellent visible light-responded photocatalysis performance, but Sr
2wCuO
6and Ca
2wCuO
6but do not there is visible light-responded photocatalysis performance.
Summary of the invention
The purpose of this invention is to provide a kind of visible light-responded photocatalyst Ba that has
2wCuO
6and preparation method thereof.
The chemical constitution formula with visible light-responded photochemical catalyst the present invention relates to is: Ba
2wCuO
6.
Preparation method's concrete steps of above-mentioned visible light-responded photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material BaCO
3, WO
3and CuO, press Ba
2wCuO
6the chemical formula weigh batching.
(2) raw material step (1) prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, be mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed is 850 ~ 880 ℃ of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then by ball mill pulverizing means, particle diameter diminished, and lower than 2 μ m, obtains Ba
2wCuO
6powder.
Preparation method of the present invention is simple, cost is low, and the photochemical catalyst of preparation has good catalytic performance, has the effect of decomposing harmful chemical, organic-biological matter and sterilization under radiation of visible light.
The specific embodiment
Below will be specifically described the present invention:
1, the composite oxides in order to obtain using in the present invention, at first used solid-phase synthesis to prepare powder, the various oxides as raw material or carbonate measured than being mixed according to the target constitutional chemistry, more synthetic in air atmosphere under normal pressure.
2, in order effectively to utilize light, the size of the photochemical catalyst in the present invention is preferably in micron level, or even nano particle, and specific area is larger.The oxide powder prepared with solid-phase synthesis, its particle is large and surface area is less, but can particle diameter be diminished by ball mill pulverizing means.
3, photocatalysis experiment of the present invention is usingd methyl orange as the simulation organic pollution, and its concentration is 20mg/L; Photocatalyst Ba
2wCuO
6addition be 1g/L; Light source is used the xenon lamp of 300W, and the vessel that reactive tank is used pyrex to make, obtain by wave filter the light that wavelength is greater than 420nm long wavelength, then irradiates photochemical catalyst; Catalysis time is set as 120 minutes.
Embodiment 1:
(1) by 99.9% analytically pure chemical raw material BaCO
3, WO
3and CuO, press Ba
2wCuO
6the chemical formula weigh batching.
(2) raw material step (1) prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, be mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed is 850 ℃ of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then by ball mill pulverizing means, particle diameter diminished, and lower than 2 μ m, obtains Ba
2wCuO
6powder.
Prepared photochemical catalyst, be greater than at wavelength under the radiation of visible light of 420nm, the methyl orange clearance reached to 97.7% in 120 minutes.
Embodiment 2:
(1) by 99.9% analytically pure chemical raw material BaCO
3, WO
3and CuO, press Ba
2wCuO
6the chemical formula weigh batching.
(2) raw material step (1) prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, be mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed is 865 ℃ of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then by ball mill pulverizing means, particle diameter diminished, and lower than 2 μ m, obtains Ba
2wCuO
6powder.
Prepared photochemical catalyst, be greater than at wavelength under the radiation of visible light of 420nm, the methyl orange clearance reached to 98.1% in 120 minutes.
Embodiment 3:
(1) by 99.9% analytically pure chemical raw material BaCO
3, WO
3and CuO, press Ba
2wCuO
6the chemical formula weigh batching.
(2) raw material step (1) prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, be mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed is 880 ℃ of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then by ball mill pulverizing means, particle diameter diminished, and lower than 2 μ m, obtains Ba
2wCuO
6powder.
Prepared photochemical catalyst, be greater than at wavelength under the radiation of visible light of 420nm, and 120min reaches 98.4% to the methyl orange clearance.
The present invention never is limited to above embodiment.The bound of each temperature, interval value can realize the present invention, at this, do not enumerate embodiment.
The made photocatalyst powder of above inventive embodiments can be carried on multiple matrix surface.Matrix can be glass, pottery, active carbon or quartz sand etc., and photochemical catalyst can be carried on matrix surface with the form of film.
Claims (1)
1. composite oxides, as the application of visible light-responded photochemical catalyst, is characterized in that the chemical constitution formula of described composite oxides is: Ba
2wCuO
6;
Preparation method's concrete steps of described composite oxides are:
(1) by 99.9% analytically pure chemical raw material BaCO
3, WO
3and CuO, press Ba
2wCuO
6the chemical formula weigh batching;
(2) raw material step (1) prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, be mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves;
(3) powder step (2) mixed is 850 ~ 880 ℃ of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then by ball mill pulverizing means, particle diameter diminished, and lower than 2 μ m, obtains Ba
2wCuO
6powder.
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|---|---|---|---|
| CN201310399569.5A CN103433052B (en) | 2013-09-05 | 2013-09-05 | Visible-light-responsive photocatalyst Ba2WCuO6 and preparation method thereofore |
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|---|---|---|---|
| CN201310399569.5A CN103433052B (en) | 2013-09-05 | 2013-09-05 | Visible-light-responsive photocatalyst Ba2WCuO6 and preparation method thereofore |
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| Publication Number | Publication Date |
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| CN103433052A true CN103433052A (en) | 2013-12-11 |
| CN103433052B CN103433052B (en) | 2015-04-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307532A (en) * | 2014-10-13 | 2015-01-28 | 桂林理工大学 | Visible-light response photocatalyst CuSnW2O9 and preparation method thereof |
| CN104338546A (en) * | 2013-07-31 | 2015-02-11 | 中国科学院大连化学物理研究所 | A semiconductor material photocatalyst based on a layered structure and hydrogen production applications thereof |
| CN104646019A (en) * | 2015-02-26 | 2015-05-27 | 桂林理工大学 | Photocatalyst LiCu3NbWO9 with visible light response and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301614B (en) * | 2008-07-04 | 2010-11-03 | 武汉理工大学 | Method for preparing visible light responding tungsten-containing semi-conductor photocatalysis material |
| WO2011111800A1 (en) * | 2010-03-12 | 2011-09-15 | 株式会社オハラ | Photocatalyst, slurry mixture, forming member and coating, coating film forming member, sintered body, glass-ceramic composite, glass, building material and clarification material |
-
2013
- 2013-09-05 CN CN201310399569.5A patent/CN103433052B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301614B (en) * | 2008-07-04 | 2010-11-03 | 武汉理工大学 | Method for preparing visible light responding tungsten-containing semi-conductor photocatalysis material |
| WO2011111800A1 (en) * | 2010-03-12 | 2011-09-15 | 株式会社オハラ | Photocatalyst, slurry mixture, forming member and coating, coating film forming member, sintered body, glass-ceramic composite, glass, building material and clarification material |
Non-Patent Citations (2)
| Title |
|---|
| XIAOLIAN CHAO ET AL: ""Effect of addition of Ba(W0.5Cu0.5)O3 in Pb(Mg1/3Nb2/3)O3 -Pb(Zn1/3Nb2/3)O3 -Pb(Zr0.52Ti0.48)O3 Ceramics on the sintering temperature, electrical properties and phase transition"", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| 顾飞: ""窄带半导体Bi2MoO6、CuWO4的合成与光催化性能研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338546A (en) * | 2013-07-31 | 2015-02-11 | 中国科学院大连化学物理研究所 | A semiconductor material photocatalyst based on a layered structure and hydrogen production applications thereof |
| CN104307532A (en) * | 2014-10-13 | 2015-01-28 | 桂林理工大学 | Visible-light response photocatalyst CuSnW2O9 and preparation method thereof |
| CN104646019A (en) * | 2015-02-26 | 2015-05-27 | 桂林理工大学 | Photocatalyst LiCu3NbWO9 with visible light response and preparation method thereof |
| CN104646019B (en) * | 2015-02-26 | 2016-08-24 | 桂林理工大学 | Visible light-responded photocatalyst Li Cu3nbWO9and preparation method thereof |
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| CN103433052B (en) | 2015-04-15 |
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Effective date of registration: 20201124 Address after: Room 301, floor 3, 1-10, block B, Xingyu cultural and Creative Industry Park, 888 Donghai Avenue, Bengbu City, Anhui Province Patentee after: Anhui Shangqian science and Technology Information Consulting Co.,Ltd. Address before: Room 301, building 2, No. 40, xiayuangang East Street, Yuangang village, Tianhe District, Guangzhou City, Guangdong Province (office only) Patentee before: Guangzhou Boyi Intellectual Property Operation Co.,Ltd. Effective date of registration: 20201124 Address after: Room 301, building 2, No. 40, xiayuangang East Street, Yuangang village, Tianhe District, Guangzhou City, Guangdong Province (office only) Patentee after: Guangzhou Boyi Intellectual Property Operation Co.,Ltd. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin Construction Road No. 12 Patentee before: GUILIN University OF TECHNOLOGY |
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