CN103706352B - Visible light-responded photochemical catalyst SrLa 10v 4o 26and preparation method thereof - Google Patents
Visible light-responded photochemical catalyst SrLa 10v 4o 26and preparation method thereof Download PDFInfo
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- CN103706352B CN103706352B CN201310570706.7A CN201310570706A CN103706352B CN 103706352 B CN103706352 B CN 103706352B CN 201310570706 A CN201310570706 A CN 201310570706A CN 103706352 B CN103706352 B CN 103706352B
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Abstract
The invention discloses a kind of visible light-responded photochemical catalyst SrLa
10v
4o
26and preparation method thereof.The chemical constitution formula of this photochemical catalyst is SrLa
10v
4o
26.(1) by 99.9% analytically pure chemical raw material SrCO
3, La
2o
3and V
2o
5, by SrLa
10v
4o
26chemical 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 ~ 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 SrLa
10v
4o
26powder.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 SrLa
10v
4o
26and 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.We are to SrLa recently
10v
4o
26, BaLa
10v
4o
26and CaLa
10v
4o
26etc. having carried out Photocatalytic Performance Study, found that SrLa
10v
4o
26there is excellent visible light-responded photocatalysis performance, but BaLa
10v
4o
26and CaLa
10v
4o
26but 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 SrLa
10v
4o
26and preparation method thereof.
The chemical constitution formula with visible light-responded photochemical catalyst that the present invention relates to is: SrLa
10v
4o
26.
Preparation method's concrete steps of above-mentioned visible light-responded photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material SrCO
3, La
2o
3and V
2o
5, by SrLa
10v
4o
26chemical 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 ~ 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 SrLa
10v
4o
26powder.
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; Photochemical catalyst SrLa
10v
4o
26addition 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 SrCO
3, La
2o
3and V
2o
5, by SrLa
10v
4o
26chemical 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 SrLa
10v
4o
26powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 98.8% to methyl orange clearance in 120 minutes at wavelength.
Embodiment 2:
(1) by 99.9% analytically pure chemical raw material SrCO
3, La
2o
3and V
2o
5, by SrLa
10v
4o
26chemical 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 870 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 SrLa
10v
4o
26powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 99.1% to methyl orange clearance in 120 minutes at wavelength.
Embodiment 3:
(1) by 99.9% analytically pure chemical raw material SrCO
3, La
2o
3and V
2o
5, by SrLa
10v
4o
26chemical 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 SrLa
10v
4o
26powder.
Prepared photochemical catalyst, be greater than the radiation of visible light of 420nm at wavelength under, 120min reaches 98.3% 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. a visible light-responded photochemical catalyst, is characterized in that the chemical constitution formula of described photochemical catalyst is: SrLa
10v
4o
26;
Preparation method's concrete steps of described photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material SrCO
3, La
2o
3and V
2o
5, by SrLa
10v
4o
26chemical 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 ~ 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 SrLa
10v
4o
26powder.
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| CN201310570706.7A CN103706352B (en) | 2013-11-17 | 2013-11-17 | Visible light-responded photochemical catalyst SrLa 10v 4o 26and preparation method thereof |
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| CN201310570706.7A CN103706352B (en) | 2013-11-17 | 2013-11-17 | Visible light-responded photochemical catalyst SrLa 10v 4o 26and preparation method thereof |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307505A (en) * | 2014-09-17 | 2015-01-28 | 桂林理工大学 | Photocatalyst ZnLa3VO8 with visible light response, and preparation method thereof |
| CN104190400B (en) * | 2014-09-27 | 2016-06-29 | 桂林理工大学 | Visible light-responded photocatalyst Ca3La4V2O14And preparation method thereof |
| CN104275176B (en) * | 2014-10-13 | 2016-06-29 | 桂林理工大学 | Visible light-responded photocatalyst Ca3Nb3V5O23And preparation method thereof |
| CN104275188B (en) * | 2014-10-16 | 2016-06-29 | 桂林理工大学 | Visible light-responded photocatalyst CuTi2V4O15And preparation method thereof |
| CN104815643A (en) * | 2015-04-21 | 2015-08-05 | 桂林理工大学 | Visible light response photocatalyst BaLaV3O10 and preparation method thereof |
| CN104874388A (en) * | 2015-05-23 | 2015-09-02 | 桂林理工大学 | Visible light responding photocatalyst SrLi3SmV8O24 and preparation method thereof |
| CN105268432A (en) * | 2015-10-10 | 2016-01-27 | 桂林理工大学 | Visible light responsive photocatalyst Ba3Li2LaV3O13 and preparation method thereof |
| CN105268431A (en) * | 2015-10-10 | 2016-01-27 | 桂林理工大学 | Visible light responsive photocatalyst Li4Ba2EuV3O13 and preparation method thereof |
| CN105562015A (en) * | 2015-12-15 | 2016-05-11 | 桂林理工大学 | Visible light responding photocatalyst Ca3Fe2GeO8 and preparation method thereof |
| CN105561967A (en) * | 2015-12-20 | 2016-05-11 | 桂林理工大学 | Visible-light-response photocatalyst SrLa2Ge2O8 and preparation method thereof |
| CN116875311B (en) * | 2023-07-19 | 2024-06-14 | 常熟理工学院 | Lanthanum strontium vanadate-based red luminescent material and preparation method and application thereof |
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| CN103316686A (en) * | 2013-06-24 | 2013-09-25 | 桂林理工大学 | Visible-light-responded photocatalyst SrCu2V2O8 and preparation method thereof |
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| CN103316686A (en) * | 2013-06-24 | 2013-09-25 | 桂林理工大学 | Visible-light-responded photocatalyst SrCu2V2O8 and preparation method thereof |
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| Title |
|---|
| Search for superconductivity in analogues of La2-xSrxCuO4:Sr2-xLnxVO4(Ln=La,Ce,Pr,Nd,Eu);F.Deslandes et al;《Physica C》;19911231;第179卷;85-90 * |
| Visible light-induced photobleaching of methylene blue aqueous solution using (Sr1-xLax) TiO3+δ-TiO2 composite powder;Shinya Otsuka-Yao-Matsuo et al;《Journal of Photochemistry and Photobiology A:Chemistry》;20040703;第168卷;1-6 * |
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Effective date of registration: 20201202 Address after: 257000 Wanda harbor city, No. 25-1, Gangcheng Road, Dongying Port Economic Development Zone, Dongying City, Shandong Province Patentee after: Shandong Xingqiang Chemical Industry Technology Research Institute Co.,Ltd. Address before: Room 502, building 1, No. 40, xiayuangang East Street, Tianhe District, Guangzhou City, Guangdong Province 510000 Patentee before: Guangzhou Boyi Intellectual Property Operation Co.,Ltd. Effective date of registration: 20201202 Address after: Room 502, building 1, No. 40, xiayuangang East Street, Tianhe District, Guangzhou City, Guangdong Province 510000 Patentee after: Guangzhou Boyi Intellectual Property Operation Co.,Ltd. Address before: 541004 Guilin city of the Guangxi Zhuang Autonomous Region Road No. 12 building of Guilin University of Technology Patentee before: GUILIN University OF TECHNOLOGY |