CN103878002B - Visible light-responded photocatalyst Li ZrPO 5and preparation method thereof - Google Patents
Visible light-responded photocatalyst Li ZrPO 5and preparation method thereof Download PDFInfo
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- CN103878002B CN103878002B CN201410137827.7A CN201410137827A CN103878002B CN 103878002 B CN103878002 B CN 103878002B CN 201410137827 A CN201410137827 A CN 201410137827A CN 103878002 B CN103878002 B CN 103878002B
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- photochemical catalyst
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Abstract
The invention discloses a kind of visible light-responded photocatalyst Li ZrPO
5and preparation method thereof.The chemical constitution formula of this photochemical catalyst is LiZrPO
5.The invention also discloses the preparation method of above-mentioned material.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 photocatalyst Li ZrPO
5and 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 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 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 phosphate compounds LiZrPO
5, LiTiPO
5and LiSnPO
5carry out Photocatalytic Performance Study, found that LiZrPO
5there is excellent visible light-responded photocatalysis performance, and LiTiPO
5and LiSnPO
5do not possess 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 photocatalyst Li ZrPO
5and preparation method thereof.
The chemical composition general formula with visible light-responded photochemical catalyst that the present invention relates to is: LiZrPO
5.
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, ZrO
2and NH
4h
2pO
4starting powder press LiZrPO
5chemical 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 800 ~ 850 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and average diameter of particles is diminished, lower than 2 μm, namely obtain LiZrPO
5powder.
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; Photocatalyst Li ZrPO
5addition 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 Li
2cO
3, ZrO
2and NH
4h
2pO
4starting powder press LiZrPO
5chemical 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 800 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and average diameter of particles is diminished, lower than 2 μm, namely obtain LiZrPO
5powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 96.1% to methyl orange clearance in 120 minutes at wavelength.
Embodiment 2:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, ZrO
2and NH
4h
2pO
4starting powder press LiZrPO
5chemical 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 830 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and average diameter of particles is diminished, lower than 2 μm, namely obtain LiZrPO
5powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 97.1% to methyl orange clearance in 120 minutes at wavelength.
Embodiment 3:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, ZrO
2and NH
4h
2pO
4starting powder press LiZrPO
5chemical 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 average diameter of particles is diminished, lower than 2 μm, namely obtain LiZrPO
5powder.
Prepared photochemical catalyst, be greater than the radiation of visible light of 420nm at wavelength under, 120min reaches 96.3% 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: LiZrPO
5;
Preparation method's concrete steps of described photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material Li
2cO
3, ZrO
2and NH
4h
2pO
4starting powder press LiZrPO
5chemical 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 800 ~ 850 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverizes means by ball mill and makes average diameter of particles lower than 2 μm, namely obtain LiZrPO
5powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410137827.7A CN103878002B (en) | 2014-04-08 | 2014-04-08 | Visible light-responded photocatalyst Li ZrPO 5and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410137827.7A CN103878002B (en) | 2014-04-08 | 2014-04-08 | Visible light-responded photocatalyst Li ZrPO 5and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103878002A CN103878002A (en) | 2014-06-25 |
| CN103878002B true CN103878002B (en) | 2016-01-13 |
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ID=50947322
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|---|---|---|---|
| CN201410137827.7A Active CN103878002B (en) | 2014-04-08 | 2014-04-08 | Visible light-responded photocatalyst Li ZrPO 5and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143316A (en) * | 2007-10-12 | 2008-03-19 | 桂林工学院 | Niobate photocatalyst and preparation method |
| CN101757910A (en) * | 2010-01-02 | 2010-06-30 | 桂林理工大学 | Visible light responding composite oxide photocatalyst Ba4Li2W2O11 and preparation method |
| CN103266006A (en) * | 2013-06-06 | 2013-08-28 | 太原理工大学 | Lubricating grease containing ion-exchange-type zirconium phosphate additive and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2545992A4 (en) * | 2010-03-12 | 2013-09-18 | Ohara Kk | Photocatalyst, slurry mixture, forming member and coating, coating film forming member, sintered body, glass-ceramic composite, glass, building material and clarification material |
-
2014
- 2014-04-08 CN CN201410137827.7A patent/CN103878002B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143316A (en) * | 2007-10-12 | 2008-03-19 | 桂林工学院 | Niobate photocatalyst and preparation method |
| CN101757910A (en) * | 2010-01-02 | 2010-06-30 | 桂林理工大学 | Visible light responding composite oxide photocatalyst Ba4Li2W2O11 and preparation method |
| CN103266006A (en) * | 2013-06-06 | 2013-08-28 | 太原理工大学 | Lubricating grease containing ion-exchange-type zirconium phosphate additive and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| Structureand Photocatalytic Activity of Ti1-xMxO2±δ(M W,V,Ce,Zr,Fe,and Cu) Synthesized by Solution Combustion Method;K.Nagaveni等;《J.Phys.Chem.B》;20041125;第108卷(第52期);第20204-20212页 * |
| 球磨法制备异质结型光催化剂及催化性能;王岩玲等;《化学研究与应用》;20091231;第21卷(第12期);第1612-1617页 * |
| 钨磷酸碱金属盐气相光催化氧化甲醛的性能研究;尚静等;《复旦学报》;20031231;第42卷(第6期);第903-905页 * |
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| CN103878002A (en) | 2014-06-25 |
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Effective date of registration: 20201207 Address after: No.25-1, Gangcheng Road, dongyinggang Economic Development Zone, Hekou District, 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 Patentee before: Guangzhou Boyi Intellectual Property Operation Co.,Ltd. Effective date of registration: 20201207 Address after: Room 502, building 1, No. 40, xiayuangang East Street, Tianhe District, Guangzhou City, Guangdong Province 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 |