CN103586018B - Visible light-responded photochemical catalyst Bi 5sbTiWO 15and preparation method thereof - Google Patents
Visible light-responded photochemical catalyst Bi 5sbTiWO 15and preparation method thereof Download PDFInfo
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- CN103586018B CN103586018B CN201310459094.4A CN201310459094A CN103586018B CN 103586018 B CN103586018 B CN 103586018B CN 201310459094 A CN201310459094 A CN 201310459094A CN 103586018 B CN103586018 B CN 103586018B
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Abstract
The invention discloses a kind of visible light-responded photochemical catalyst Bi
5sbTiWO
15and preparation method thereof.The chemical constitution formula of this photochemical catalyst is Bi
5sbTiWO
15.(1) by 99.9% analytically pure chemical raw material Bi
2o
3, Sb
2o
5, TiO
2with? WO
3, by Bi
5sbTiWO
15chemical formula weigh batching.(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and absolute ethyl alcohol, ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.(3) powder step (2) mixed 850 ~ 900 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and particle diameter is diminished, lower than 2 μm, namely obtain Bi
5sbTiWO
15powder.Preparation method of the present invention is simple, cost is low, and the photochemical catalyst of preparation has excellent catalytic performance, has the effect of decomposing harmful chemical under visible light illumination, and good stability, have a good application prospect.
Description
Technical field
The present invention relates to a kind of visible light-responded photochemical catalyst Bi
5sbTiWO
15and 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 be realize sustainable development, improve people's living standard and safeguard national security in the urgent need to.
From phase late 1970s, there has been proposed and to utilize in photochemical catalyst decomposition water and the organic matter such as agricultural chemicals in air and odorant, and scribble the application example such as self-cleaning of the surface of solids of photochemical catalyst.The principle of light-catalyzed reaction is that photochemical catalyst is after absorbing the photon higher than its band-gap energy, generate hole and electronics, these holes and electronics carry out oxidation reaction and reduction reaction respectively, reach the object of decomposing harmful chemical, organic-biological matter and sterilization.Photochemical catalyst has many kinds, and wherein most representative is titanium dioxide (TiO
2), titanium dioxide has been utilized to decompose organic matters such as the agricultural chemicals in water and in air and odorants, but the band gap of titanium dioxide is 3.2eV, only under the ultraviolet irradiation shorter than 400nm, just activity can be shown, can only at indoor or the local work having uviol lamp, almost can not utilize visible ray, this limits the use of titanium dioxide optical catalyst greatly.
Consider the practicality of photochemical catalyst in decomposing harmful substances, utilize sunshine to be indispensable as light source.Irradiate maximum to sunshine medium wavelength intensity of visible ray near 500nm on earth's surface, wavelength is the energy of the visible region of 400nm ~ 750nm is approximately 43% of sunshine gross energy, so in order to efficient utilization, the R and D of bismuth series photocatalyst have achieved a series of great achievement, and bismuthous compound is as BiVO
4, Bi
2moO
6, Bi
2mo
2o
9, Bi
2mo
3o
12and Bi
2wO
4be in the news and there is good absorption under visible light.A series of niobium (tantalum) hydrochlorate photochemical catalyst is widely studied owing to having higher photocatalytic activity.Such as, 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 there is good photocatalysis performance.
Although photocatalysis research has carried out the several years, but at present report to have visible light-responded photochemical catalyst kind still very limited, still also exist that light conversion efficiency is low, poor stability and the problem such as spectrum respective range is narrow, so it is very necessary for researching and developing the new visible light-responded high efficiency photocatalyst that has.Have bibliographical information bismuthates Bi
5sbTiWO
15synthesis, crystal structure and ferroelectric properties.Do not have visible light-responded photocatalysis performance because ferroelectric is generally insulator, the research therefore had not yet to see about this compounds photocatalysis performance is reported.We are to Bi recently
5nbTiWO
15, Bi
5taTiWO
15and Bi
5sbTiWO
15carry out Photocatalytic Performance Study Deng bismuthates, found that Bi
5sbTiWO
15there is excellent visible light-responded photocatalysis performance, but Bi
5taTiWO
15and Bi
5nbTiWO
15but not there is visible light-responded photocatalysis performance.
Summary of the invention
The object of this invention is to provide and a kind of there is visible light-responded photochemical catalyst Bi
5sbTiWO
15and preparation method thereof.
The chemical constitution formula with visible light-responded bismuthate photocatalyst that the present invention relates to is: Bi
5sbTiWO
15.
Preparation method's concrete steps of above-mentioned visible light-responded bismuthate photocatalyst are:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, Sb
2o
5, TiO
2and WO
3, by Bi
5sbTiWO
15chemical formula weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and absolute ethyl alcohol, ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed 850 ~ 900 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and particle diameter is diminished, lower than 2 μm, namely obtain Bi
5sbTiWO
15powder.
Preparation method of the present invention is simple, cost is low, and the photochemical catalyst of preparation has excellent catalytic performance, has the effect of decomposing harmful chemical, organic-biological matter and sterilization under visible light illumination.
Detailed description of the invention
To be specifically described the present invention below:
1, in order to obtain the composite oxides used in the present invention, first use solid-phase synthesis to prepare powder, namely using as the various oxide of raw material or carbonate according to the metering of target constitutional chemistry than mixing, then to synthesize in air atmosphere at ambient pressure.
2, in order to effectively 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.With oxide powder prepared by solid-phase synthesis, its particle is comparatively large and surface area is less, but can pulverize means by ball mill makes particle diameter diminish.
3, photocatalysis experiment of the present invention is using methyl orange as simulation organic pollution, and its concentration is 20mg/L; Bismuthate photocatalyst Bi
5sbTiWO
15addition be 1g/L; Light source uses the xenon lamp of 300W, the vessel that reactive tank uses pyrex to make, and obtains the light that wavelength is greater than 420nm long wavelength, then irradiate photochemical catalyst by wave filter; Catalysis time is set as 120 minutes.
Embodiment 1:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, Sb
2o
5, TiO
2and WO
3, by Bi
5sbTiWO
15chemical formula weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and absolute ethyl alcohol, ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed 850 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and particle diameter is diminished, lower than 2 μm, namely obtain bismuthates Bi
5sbTiWO
15powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 98.2% to methyl orange clearance in 120 minutes at wavelength.
Embodiment 2:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, Sb
2o
5, TiO
2and WO
3, by Bi
5sbTiWO
15chemical formula weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and absolute ethyl alcohol, ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed 880 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and particle diameter is diminished, lower than 2 μm, namely obtain bismuthates Bi
5sbTiWO
15powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 99.0% to methyl orange clearance in 120 minutes at wavelength.
Embodiment 3:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, Sb
2o
5, TiO
2and WO
3, by Bi
5sbTiWO
15chemical formula weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and absolute ethyl alcohol, ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) mixed 900 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and particle diameter is diminished, lower than 2 μm, namely obtain bismuthates Bi
5sbTiWO
15powder.
Prepared photochemical catalyst, be greater than the radiation of visible light of 420nm at wavelength under, 120min reaches 98.7% to methyl orange clearance.
The present invention is never limited to above embodiment.Bound, the interval value of each temperature can realize the present invention, do not enumerate embodiment at this.
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 in the form of a film.
Claims (1)
1. bismuthates is as an application for visible light-responded photochemical catalyst, it is characterized in that the chemical constitution formula of described bismuthates is: Bi
5sbTiWO
15;
Preparation method's concrete steps of described bismuthates are:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, Sb
2o
5, TiO
2and WO
3, by Bi
5sbTiWO
15chemical formula weigh batching;
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and absolute ethyl alcohol, ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves;
(3) powder step (2) mixed 850 ~ 900 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and particle diameter is diminished, lower than 2 μm, namely obtain Bi
5sbTiWO
15powder.
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| CN201310459094.4A CN103586018B (en) | 2013-10-07 | 2013-10-07 | Visible light-responded photochemical catalyst Bi 5sbTiWO 15and preparation method thereof |
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|---|---|---|---|
| CN201310459094.4A CN103586018B (en) | 2013-10-07 | 2013-10-07 | Visible light-responded photochemical catalyst Bi 5sbTiWO 15and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103586018A CN103586018A (en) | 2014-02-19 |
| CN103586018B true CN103586018B (en) | 2015-11-04 |
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ID=50076457
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799690A (en) * | 2006-01-13 | 2006-07-12 | 南京大学 | Visible light responsible photocatalysis material of AgTO2 type composite oxide and its application |
| CN101612562A (en) * | 2009-07-19 | 2009-12-30 | 桂林理工大学 | Compound oxide photocatalyst Bi 4V 2-xRE xO 11-xAnd preparation method thereof |
| CN101797500A (en) * | 2009-12-31 | 2010-08-11 | 南京大学 | Gd3-xBixSbO7, Gd3-xYxSbO7 and In2BiTaO7 photocatalyst as well as preparation and application |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428063A (en) * | 2012-01-18 | 2015-03-18 | 日东电工株式会社 | Titania photocatalytic compounds and methods of making the same |
-
2013
- 2013-10-07 CN CN201310459094.4A patent/CN103586018B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799690A (en) * | 2006-01-13 | 2006-07-12 | 南京大学 | Visible light responsible photocatalysis material of AgTO2 type composite oxide and its application |
| CN101612562A (en) * | 2009-07-19 | 2009-12-30 | 桂林理工大学 | Compound oxide photocatalyst Bi 4V 2-xRE xO 11-xAnd preparation method thereof |
| CN101797500A (en) * | 2009-12-31 | 2010-08-11 | 南京大学 | Gd3-xBixSbO7, Gd3-xYxSbO7 and In2BiTaO7 photocatalyst as well as preparation and application |
Non-Patent Citations (3)
| Title |
|---|
| Sintering and Electrical Properties of Bi6Ti3WO18 Ceramics;T. Jardiel，et al;《Ferroelectrics》;20061231;第336卷;第146页实验部分 * |
| Synthesis of Porous and Visible-Lignt Adsorbing Bi2WO6/TiO2 Heterojunction Films with Improved Photoelectrochemical and Photocatalytic Performances;Qing Chi Xu，et al;《The Journal of Physical Chemistry C》;20110324;第115卷;全文 * |
| 张金龙,等.新型铋系氧化物光催化剂.《光催化》.华东理工大学出版社,2012,第14-16页. * |
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Effective date of registration: 20220803 Address after: 225300 Wuxing industrial concentration area, Zhangguo Town, Xinghua City, Taizhou City, Jiangsu Province Patentee after: Shengtuo Thermal Control Technology Jiangsu Co.,Ltd. Address before: No. 198, Xuanhua Road, Touqiao Town, Guangling District, Yangzhou City, Jiangsu Province, 225000 Patentee before: Yangzhou Zhongzhou Medical Equipment Co.,Ltd. |
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