CN103521213A - Photocatalyst LiLaV2O7 with visible-light response and preparation method thereof - Google Patents
Photocatalyst LiLaV2O7 with visible-light response and preparation method thereof Download PDFInfo
- Publication number
- CN103521213A CN103521213A CN201310510721.2A CN201310510721A CN103521213A CN 103521213 A CN103521213 A CN 103521213A CN 201310510721 A CN201310510721 A CN 201310510721A CN 103521213 A CN103521213 A CN 103521213A
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- CN
- China
- Prior art keywords
- photocatalyst
- photochemical catalyst
- preparation
- lilav
- ball
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- Granted
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000011941 photocatalyst Substances 0.000 title abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 7
- 230000003292 diminished effect Effects 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 239000013064 chemical raw material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000000383 hazardous chemical Substances 0.000 abstract 1
- 230000001699 photocatalysis Effects 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 238000007146 photocatalysis Methods 0.000 description 5
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 4
- 229940012189 methyl orange Drugs 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000003905 agrochemical Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- VEUKJXRCHYAIAW-UHFFFAOYSA-N [Nb].[K] Chemical compound [Nb].[K] VEUKJXRCHYAIAW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001621 bismuth Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
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- Catalysts (AREA)
Abstract
The invention discloses a photocatalyst LiLaV2O7 with visible-light response and a preparation method thereof. The chemical composition formula of the photocatalyst is LiLaV2O7. The invention also discloses a preparation method of the material. The photocatalyst is simple in preparation method, and low in cost; the prepared photocatalyst has excellent catalytic performance, has an effect of decomposing hazardous chemicals under irradiation of a visible light, is good in stability and has a good application prospect.
Description
Technical field
The present invention relates to a kind of visible light-responded photocatalyst Li LaV
2o
7and 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 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 having 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 object 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 to decompose organic matters such as the agricultural chemicals in water and in atmosphere and odorants, 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 have a local work of uviol lamp, 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 maximum near sunshine medium wavelength visible light intensity 500nm on earth's surface, wavelength is that the energy of the visible region of 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 in and under visible ray, there is good absorption.A series of niobiums (tantalum) hydrochlorate photochemical catalyst is because the photocatalytic activity having compared with high is widely studied.For example, niobate photocatalyst Pb
3nb
4o
13, BiNbO
4and Bi
2mNbO
7(M=Al, Ga, In, Y, rare earth element and 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 good photocatalysis performance.
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 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 LiLaV
2o
7, LiLaNb
2o
7and LiLaTa
2o
7deng having carried out Photocatalytic Performance Study, found that LiLaV
2o
7there is excellent visible light-responded photocatalysis performance, but LiLaNb
2o
7and LiLaTa
2o
7but do not there is visible light-responded photocatalysis performance.
Summary of the invention
The object of this invention is to provide a kind of visible light-responded photocatalyst Li LaV that has
2o
7and preparation method thereof.
The chemical composition general formula with visible light-responded photochemical catalyst the present invention relates to is: LiLaV
2o
7.
Preparation method's concrete steps of above-mentioned visible light-responded photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, La
2o
3and V
2o
5, press LiLaV
2o
7chemical formula weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 800 ~ 820 ℃ 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 LiLaV
2o
7powder.
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
To be specifically described the present invention below:
1, the composite oxides in order to obtain using in the present invention, are first used solid-phase synthesis to prepare powder, the various oxides as raw material or carbonate measured than mixing according to 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 of preparing with solid-phase synthesis, its particle is compared with 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 simulation organic pollution, and its concentration is 20mg/L; Photocatalyst Li LaV
2o
7addition 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 irradiate photochemical catalyst; Catalysis time is set as 120 minutes.
Embodiment 1:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, La
2o
3and V
2o
5, press LiLaV
2o
7chemical formula weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 800 ℃ 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 LiLaV
2o
7powder.
Prepared photochemical catalyst, is greater than at wavelength under the radiation of visible light of 420nm, methyl orange clearance is reached to 97.4% in 120 minutes.
Embodiment 2:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, La
2o
3and V
2o
5, press LiLaV
2o
7chemical formula weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 810 ℃ 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 LiLaV
2o
7powder.
Prepared photochemical catalyst, is greater than at wavelength under the radiation of visible light of 420nm, methyl orange clearance is reached to 98.5% in 120 minutes.
Embodiment 3:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, La
2o
3and V
2o
5, press LiLaV
2o
7chemical formula weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 820 ℃ 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 LiLaV
2o
7powder.
Prepared photochemical catalyst, is greater than at wavelength under the radiation of visible light of 420nm, and 120min reaches 98.1% to methyl orange clearance.
The present invention is never 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. a visible light-responded photochemical catalyst, is characterized in that the chemical constitution formula of described photochemical catalyst is: LiLaV
2o
7;
Preparation method's concrete steps of described photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, La
2o
3and V
2o
5, press LiLaV
2o
7chemical formula weigh batching;
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves;
(3) powder step (2) being mixed is 800 ~ 820 ℃ 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 LiLaV
2o
7powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310510721.2A CN103521213B (en) | 2013-10-27 | 2013-10-27 | Visible light-responded photocatalyst Li LaV 2o 7and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310510721.2A CN103521213B (en) | 2013-10-27 | 2013-10-27 | Visible light-responded photocatalyst Li LaV 2o 7and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103521213A true CN103521213A (en) | 2014-01-22 |
| CN103521213B CN103521213B (en) | 2016-01-13 |
Family
ID=49923779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310510721.2A Expired - Fee Related CN103521213B (en) | 2013-10-27 | 2013-10-27 | Visible light-responded photocatalyst Li LaV 2o 7and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103521213B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437462A (en) * | 2014-12-28 | 2015-03-25 | 桂林理工大学 | Visible light responded photocatalyst Li2La3NdSb2O12 and preparation method thereof |
| CN104815642A (en) * | 2015-04-21 | 2015-08-05 | 桂林理工大学 | Visible light response photocatalyst Li2EuVO5 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 |
| CN105289574A (en) * | 2015-11-20 | 2016-02-03 | 桂林理工大学 | Photocatalyst Li2La4Sn2O11 capable of responding to visible light and preparation method thereof |
| CN105289575A (en) * | 2015-11-20 | 2016-02-03 | 桂林理工大学 | Photocatalyst Li4La2SnO7 capable of responding to visible light and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055842A (en) * | 2013-01-19 | 2013-04-24 | 桂林理工大学 | Visible-light-response composite photocatalyst (Li3NbO4) containing lithium halite structure and preparation method thereof |
-
2013
- 2013-10-27 CN CN201310510721.2A patent/CN103521213B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055842A (en) * | 2013-01-19 | 2013-04-24 | 桂林理工大学 | Visible-light-response composite photocatalyst (Li3NbO4) containing lithium halite structure and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| ARTHUR W. SLEIGHT ET AL: "Synthesis of high pressure Cd2V2O7 and related compositions", 《MATERIALS RESEARCH BULLETIN》 * |
| 罗红霞等: "LaVO4可见光催化降解罗丹明B的研究", 《生态科学》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437462A (en) * | 2014-12-28 | 2015-03-25 | 桂林理工大学 | Visible light responded photocatalyst Li2La3NdSb2O12 and preparation method thereof |
| CN104815642A (en) * | 2015-04-21 | 2015-08-05 | 桂林理工大学 | Visible light response photocatalyst Li2EuVO5 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 |
| CN105289574A (en) * | 2015-11-20 | 2016-02-03 | 桂林理工大学 | Photocatalyst Li2La4Sn2O11 capable of responding to visible light and preparation method thereof |
| CN105289575A (en) * | 2015-11-20 | 2016-02-03 | 桂林理工大学 | Photocatalyst Li4La2SnO7 capable of responding to visible light and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103521213B (en) | 2016-01-13 |
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Effective date of registration: 20201211 Address after: No. 198, Xuanhua Road, Touqiao Town, Guangling District, Yangzhou City, Jiangsu Province, 225000 Patentee after: Yangzhou Zhongzhou Medical Equipment 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 |
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Granted publication date: 20160113 |