CN104226326A - Visible-light response photocatalyst Bi2CoW5O19 and preparation method thereof - Google Patents
Visible-light response photocatalyst Bi2CoW5O19 and preparation method thereof Download PDFInfo
- Publication number
- CN104226326A CN104226326A CN201410493101.7A CN201410493101A CN104226326A CN 104226326 A CN104226326 A CN 104226326A CN 201410493101 A CN201410493101 A CN 201410493101A CN 104226326 A CN104226326 A CN 104226326A
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- China
- Prior art keywords
- photochemical catalyst
- preparation
- cow
- photocatalyst
- bi2cow5o19
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000011941 photocatalyst Substances 0.000 title abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 18
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 5
- 239000013064 chemical raw material Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 244000052616 bacterial pathogen Species 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 230000001699 photocatalysis Effects 0.000 description 7
- 230000003292 diminished effect Effects 0.000 description 4
- 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
- 238000007146 photocatalysis Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 230000005855 radiation Effects 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
- 230000003595 spectral effect Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 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
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 150000001621 bismuth Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 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
- 238000005286 illumination Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- RHDUVDHGVHBHCL-UHFFFAOYSA-N niobium tantalum Chemical class [Nb].[Ta] RHDUVDHGVHBHCL-UHFFFAOYSA-N 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
- 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 visible-light response photocatalyst Bi2CoW5O19 and a preparation method thereof. The chemical constitution of the photocatalyst is Bi2CoW5O19. The invention further discloses the preparation method of the photocatalyst. The photocatalyst disclosed by the invention has the advantages of wide spectrum response range, high photo-conversion efficiency and high stability and ha the effects of decomposing harmful chemical substances and organic biological matters and killing germs; furthermore, the preparation method is simple; the synthesis temperature is low, and the cost is low; the visible-light response photocatalyst Bi2CoW5O19 is suitable for industrial production and application.
Description
Technical field
The present invention relates to a kind of visible light-responded photochemical catalyst Bi
2coW
5o
19and 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 spectral response 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 consisting of Bi
2coW
5o
19, Bi
2znW
5o
19, Bi
2niW
5o
19, Bi
2mgW
5o
19compound carried out Photocatalytic Performance Study, found that Bi
2coW
5o
19band gap be 2.78 eV, have excellent visible light-responded photocatalysis performance, the band gap width of other sample is all greater than 3.0eV, just can only can show activity under ultraviolet irradiation.
Summary of the invention
The object of this invention is to provide and a kind of there is visible light-responded photochemical catalyst Bi
2coW
5o
19and preparation method thereof.
The chemical constitution formula with visible light-responded photochemical catalyst that the present invention relates to is: Bi
2coW
5o
19.
Preparation method's concrete steps of above-mentioned visible light-responded photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, CoO and WO
3starting powder press Bi
2coW
5o
19composition weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and distilled water, 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 Bi
2coW
5o
19powder.
The spectral response range of the photochemical catalyst that the present invention obtains is wide, the high and good stability of light conversion efficiency, has the effect of decomposing harmful chemical, organic-biological matter and sterilization under visible light illumination; Preparation method is simple in addition, synthesis temperature is low, and cost is low, is applicable to industrial production and application.
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 Bi
2coW
5o
19addition 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 60 minutes.
Embodiment 1:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, CoO and WO
3starting powder press Bi
2coW
5o
19composition weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and distilled water, 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 Bi
2coW
5o
19powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 97.1% to methyl orange clearance in 60 minutes at wavelength.
Embodiment 2:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, CoO and WO
3starting powder press Bi
2coW
5o
19composition weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and distilled water, 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 Bi
2coW
5o
19powder.
Prepared photochemical catalyst, under being greater than the radiation of visible light of 420nm, reaches 97.4% to methyl orange clearance in 60 minutes at wavelength.
Embodiment 3:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, CoO and WO
3starting powder press Bi
2coW
5o
19composition weigh batching.
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and distilled water, 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 Bi
2coW
5o
19powder.
Prepared photochemical catalyst, be greater than the radiation of visible light of 420nm at wavelength under, 60min reaches 98.4% 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 Bi
2coW
5o
19;
Preparation method's concrete steps of described photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material Bi
2o
3, CoO and WO
3starting powder press Bi
2coW
5o
19composition weigh batching;
(2) raw material mixing step (1) prepared, put into ball grinder, add zirconia ball and distilled water, 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 Bi
2coW
5o
19powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493101.7A CN104226326A (en) | 2014-09-24 | 2014-09-24 | Visible-light response photocatalyst Bi2CoW5O19 and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493101.7A CN104226326A (en) | 2014-09-24 | 2014-09-24 | Visible-light response photocatalyst Bi2CoW5O19 and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104226326A true CN104226326A (en) | 2014-12-24 |
Family
ID=52215749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410493101.7A Pending CN104226326A (en) | 2014-09-24 | 2014-09-24 | Visible-light response photocatalyst Bi2CoW5O19 and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104226326A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005034716A (en) * | 2003-07-18 | 2005-02-10 | National Institute For Materials Science | Visible light responsive photocatalyst comprising bismuth composite oxide of alkali metal and silver, and harmful chemical substance decomposing and removing method using it |
| EP1724014A1 (en) * | 2004-03-12 | 2006-11-22 | National Institute for Materials Science | Photocatalyst based on composite oxide responsive to visible light and method for decomposition and removal of harmful chemical material using the same |
| CN101612560A (en) * | 2009-07-19 | 2009-12-30 | 桂林理工大学 | Compound oxide photocatalyst Bi 4M 2O 11Preparation method and application thereof |
| CN103551163A (en) * | 2013-11-06 | 2014-02-05 | 桂林理工大学 | Visible-light response photocatalyst Bi2Fe2W3O15 as well as preparation method thereof |
| CN103586019A (en) * | 2013-10-07 | 2014-02-19 | 桂林理工大学 | Visible-light response photocatalyst BiSbW2O10 and preparation method thereof |
-
2014
- 2014-09-24 CN CN201410493101.7A patent/CN104226326A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005034716A (en) * | 2003-07-18 | 2005-02-10 | National Institute For Materials Science | Visible light responsive photocatalyst comprising bismuth composite oxide of alkali metal and silver, and harmful chemical substance decomposing and removing method using it |
| EP1724014A1 (en) * | 2004-03-12 | 2006-11-22 | National Institute for Materials Science | Photocatalyst based on composite oxide responsive to visible light and method for decomposition and removal of harmful chemical material using the same |
| CN101612560A (en) * | 2009-07-19 | 2009-12-30 | 桂林理工大学 | Compound oxide photocatalyst Bi 4M 2O 11Preparation method and application thereof |
| CN103586019A (en) * | 2013-10-07 | 2014-02-19 | 桂林理工大学 | Visible-light response photocatalyst BiSbW2O10 and preparation method thereof |
| CN103551163A (en) * | 2013-11-06 | 2014-02-05 | 桂林理工大学 | Visible-light response photocatalyst Bi2Fe2W3O15 as well as preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| QI XIAO ET AL: "Photocatalytic degradation of methylene blue over Co3O4/Bi2WO6 composite under visible light irradiation", 《CATALYSIS COMMUNICATIONS》 * |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141224 |