CN103464167B - Visible-light response niobate composite oxide photocatalyst KCuNb3O9 and preparation method thereof - Google Patents
Visible-light response niobate composite oxide photocatalyst KCuNb3O9 and preparation method thereof Download PDFInfo
- Publication number
- CN103464167B CN103464167B CN201310378183.6A CN201310378183A CN103464167B CN 103464167 B CN103464167 B CN 103464167B CN 201310378183 A CN201310378183 A CN 201310378183A CN 103464167 B CN103464167 B CN 103464167B
- Authority
- CN
- China
- Prior art keywords
- preparation
- kcunb
- niobates
- photocatalyst
- visible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Catalysts (AREA)
Abstract
The invention discloses a visible-light response niobate composite oxide photocatalyst KCuNb3O9 and a preparation method thereof. A chemical composition formula of the niobate photocatalyst is KCuNb3O9. The invention further discloses the preparation method of the photocatalyst. The preparation method is simple and low in cost; and the prepared photocatalyst has excellent catalysis performance, has an effect of decomposing a harmful chemical substance under visible-light irradiation, is good in stability, and has a good application prospect.
Description
Technical field
The present invention relates to a kind of visible light-responded niobates compound oxide photocatalyst KCuNb
3o
9and 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.In addition, 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 niobate photocatalyst 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 efficient niobate photocatalyst that has.Existing document [D. Groult, M. Hervieu, B. Raveau, J. Solid. State. Chem., 1984,53 (2): 184-192.] reports niobates KCuNb
3o
9synthesis and structure, but the research had not yet to see about this compounds photocatalysis performance is reported.We are to KCuNb
3o
9, KCuTa
3o
9, NaCuNb
3o
9and NaCuNb
3o
9carry out Photocatalytic Performance Study Deng niobium, tantalates, found that KCuNb
3o
9there is excellent visible light-responded photocatalysis performance, but the compound of other composition do not have 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 KCuNb
3o
9and preparation method thereof.
The chemical constitution formula with visible light-responded niobate photocatalyst that the present invention relates to is: KCuNb
3o
9.
Preparation method's concrete steps of above-mentioned visible light-responded niobate photocatalyst are:
(1) by 99.9% analytically pure chemical raw material K
2cO
3, CuO and Nb
2o
5, by KCuNb
3o
9chemical 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 1000 ~ 1050 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 niobates KCuNb
3o
9powder.
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; Niobate photocatalyst KCuNb
3o
9addition 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 K
2cO
3, CuO and Nb
2o
5, by KCuNb
3o
9chemical 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 1000 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 niobates KCuNb
3o
9powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 97.8% to methyl orange clearance in 120 minutes at wavelength.
Embodiment 2:
(1) by 99.9% analytically pure chemical raw material K
2cO
3, CuO and Nb
2o
5, by KCuNb
3o
9chemical 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 1030 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 niobates KCuNb
3o
9powder.
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 3:
(1) by 99.9% analytically pure chemical raw material K
2cO
3, CuO and Nb
2o
5, by KCuNb
3o
9chemical 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 1050 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 niobates KCuNb
3o
9powder.
Prepared photochemical catalyst, be greater than the radiation of visible light of 420nm at wavelength under, 120min reaches 98% 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. niobates is as an application for visible light-responded photochemical catalyst, it is characterized in that the chemical constitution formula of described niobates is: KCuNb
3o
9;
Preparation method's concrete steps of described niobates are:
(1) by 99.9% analytically pure chemical raw material K
2cO
3, CuO and Nb
2o
5, by KCuNb
3o
9chemical 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 1000 ~ 1050 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 niobates KCuNb
3o
9powder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310378183.6A CN103464167B (en) | 2013-08-27 | 2013-08-27 | Visible-light response niobate composite oxide photocatalyst KCuNb3O9 and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310378183.6A CN103464167B (en) | 2013-08-27 | 2013-08-27 | Visible-light response niobate composite oxide photocatalyst KCuNb3O9 and preparation method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103464167A CN103464167A (en) | 2013-12-25 |
CN103464167B true CN103464167B (en) | 2015-04-15 |
Family
ID=49789339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310378183.6A Expired - Fee Related CN103464167B (en) | 2013-08-27 | 2013-08-27 | Visible-light response niobate composite oxide photocatalyst KCuNb3O9 and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103464167B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104646004A (en) * | 2015-02-26 | 2015-05-27 | 桂林理工大学 | Photocatalyst LiCu2Nb7O20 with visible light response and preparation method thereof |
CN104667942A (en) * | 2015-02-26 | 2015-06-03 | 桂林理工大学 | Photocatalyst LiCuNb5O14 with visible light response and preparation method thereof |
CN104646002A (en) * | 2015-02-28 | 2015-05-27 | 桂林理工大学 | Photocatalyst KCuSb5O14 with visible light response and preparation method thereof |
CN104667905A (en) * | 2015-02-28 | 2015-06-03 | 桂林理工大学 | Photocatalyst LiSm2NbO6 with visible light response and preparation method thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19911738A1 (en) * | 1999-03-16 | 2000-09-28 | Fraunhofer Ges Forschung | Titanium dioxide photocatalyst doped with Fe · 3 ·· + · ions |
CN1736593A (en) * | 2005-07-28 | 2006-02-22 | 武汉理工大学 | Copper doped niobium potassium compound oxide photocatalyst and preparation process |
CN102205246B (en) * | 2011-03-25 | 2012-10-03 | 桂林理工大学 | Visible light-responsive composite oxide photocatalyst LiCuNb1-xTaxO4 and preparation method thereof |
-
2013
- 2013-08-27 CN CN201310378183.6A patent/CN103464167B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN103464167A (en) | 2013-12-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103706352B (en) | Visible light-responded photochemical catalyst SrLa 10v 4o 26and preparation method thereof | |
CN103316686B (en) | Visible-light-responded photocatalyst SrCu2V2O8 and preparation method thereof | |
CN103191719B (en) | Visible-light-responded photocatalyst Li4M5O17 and preparation method thereof | |
CN103157458B (en) | Visible-light-responsive tantalate photocatalyst LiMTa3O9 and preparation method thereof | |
CN103495423A (en) | Visible-light response wolframate photocatalyst Li2CuW2O8 and preparation method thereof | |
CN103521210B (en) | Visible light-responded photochemical catalyst Bi 3sb 3zn 2o 14 | |
CN103433049B (en) | Visible-light-responsive photocatalyst CaCuV2O7 and preparation method thereof | |
CN103521213B (en) | Visible light-responded photocatalyst Li LaV 2o 7and preparation method thereof | |
CN103495412B (en) | Visible light-responded photochemical catalyst SrBi 3vO 8and preparation method thereof | |
CN103464167B (en) | Visible-light response niobate composite oxide photocatalyst KCuNb3O9 and preparation method thereof | |
CN103480364B (en) | Photocatalyst La responsive to visible light7Nb3W4O30And method for preparing the same | |
CN103433048B (en) | Visible-light-responsive photocatalyst Cu3Nb2O8 and preparation method thereof | |
CN104258844A (en) | Photocatalyst YVWO7 capable of responding visible light and preparation method of photocatalyst YVWO7 | |
CN103551163A (en) | Visible-light response photocatalyst Bi2Fe2W3O15 as well as preparation method thereof | |
CN103877967B (en) | Visible light-responded photocatalyst Li 3nb 3bi 2o 12and preparation method thereof | |
CN103586019B (en) | Visible light-responded photochemical catalyst BiSbW 2o 10and preparation method thereof | |
CN103480392B (en) | Visible-light-responsive photocatalyst FeLaW3O12 and preparation method thereof | |
CN103433052B (en) | Visible-light-responsive photocatalyst Ba2WCuO6 and preparation method thereofore | |
CN103464143B (en) | Visible light responsive photocatalyst Bi6Ti5WO22 and preparation method thereof | |
CN103418389B (en) | Visible light-responded photocatalyst Ba Fe4Ti2O11 and preparation method thereof | |
CN103316666B (en) | Visible-light-responded photocatalyst Ba3Ti2V4O17 and preparation method thereof | |
CN103433029B (en) | Visible light response photocatalyst Ba9Nb2W4O26 and preparation method thereof | |
CN103331169B (en) | Visible light responsible photo-catalyst BaCuV2O7 and preparation method thereof | |
CN103316665B (en) | Visible-light-responded photocatalyst Ba3TiV4O15 and preparation method thereof | |
CN103521231B (en) | Visible light-responded photocatalyst Ba 25cu 18zn 4o 47and preparation method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20201203 Address after: 535300 Hequn village committee, Jiangcheng street, Pubei County, Qinzhou City, Guangxi Zhuang Autonomous Region Patentee after: Pubei gaomai New Energy Technology Co.,Ltd. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin Construction Road No. 12 Patentee before: GUILIN University OF TECHNOLOGY |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20210827 |