CN101530791A - New visible-light catalyst capable of degrading organic pollutant - Google Patents
New visible-light catalyst capable of degrading organic pollutant Download PDFInfo
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- CN101530791A CN101530791A CN200910097615A CN200910097615A CN101530791A CN 101530791 A CN101530791 A CN 101530791A CN 200910097615 A CN200910097615 A CN 200910097615A CN 200910097615 A CN200910097615 A CN 200910097615A CN 101530791 A CN101530791 A CN 101530791A
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- China
- Prior art keywords
- visible light
- light catalyst
- pva
- organic pollutant
- deionized water
- Prior art date
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Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 26
- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 14
- 230000000593 degrading effect Effects 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 3
- 239000010936 titanium Substances 0.000 claims description 58
- 239000008367 deionised water Substances 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 229910021641 deionized water Inorganic materials 0.000 claims description 27
- 239000000725 suspension Substances 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 16
- 239000012065 filter cake Substances 0.000 claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 238000013019 agitation Methods 0.000 claims description 11
- 238000000967 suction filtration Methods 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 230000007062 hydrolysis Effects 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 229910011011 Ti(OH)4 Inorganic materials 0.000 abstract 2
- 239000005416 organic matter Substances 0.000 abstract 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 22
- 229920002451 polyvinyl alcohol Polymers 0.000 description 22
- 229910010413 TiO 2 Inorganic materials 0.000 description 12
- 239000000243 solution Substances 0.000 description 8
- 230000001699 photocatalysis Effects 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000001914 filtration Methods 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
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Catalysts (AREA)
Abstract
The invention discloses a new visible-light catalyst capable of degrading organic pollutant, which is TiO2/D-PVA prepared from Ti(OH)4 and 8 to 32 g/mol PVA based on the amount of Ti(OH)4 in the hydrothermal process. The invention also discloses a method for preparing the visible-light catalyst capable of degrading organic pollutant. The invention has the advantages: the catalyst can degrade the organic matter under the irradiation of the visible light, the raw materials is easily available, the cost is lower, the preparation technology is simple and controllable, the device is simple, the product property is steady, the service life is long.
Description
(1) technical field
The present invention relates to semiconductor light-catalyst of a kind of degradable organic pollutant and preparation method thereof, particularly the titanium dioxide based photocatalytic preparation methods of modification.
(2) background technology
Conductor photocatalysis material is that the semi-conducting material that utilizes ultraviolet light or radiation of visible light to have photocatalytic activity causes light-catalyzed reaction, TiO
2Because the OR ability is strong, can be with most of organic compound photocatalytic degradations, decolouring, detoxification, mineralising are colourless small-molecule substance, thereby eliminate pollution to environment, be applied to the purified treatment of water, air etc., had that reaction condition gentleness, secondary pollution are little, characteristics such as easy operating, raw material are easy to get, nontoxic, photocatalysis efficiency height.Yet,, can only just have photocatalytic activity under less than the ultraviolet excitation of 387nm at wavelength, but sunshine only contains the ultraviolet light about 4%, thereby has limited its application greatly because it has the energy gap of 3.2eV.The researcher attempts changing its light abstraction width with several different methods, so that it can have response to visible light.A kind of way is at TiO
2Middle containing transition metal element, but the visible light effect is not obvious; Another kind of way is that synthetic chemical valence is lower than+4 titanium ortho states TiO also
X, but the cost costliness; In recent years, at TiO
2Middle doped with non-metals element such as aspects such as nitrogen, carbon and sulphur have caused people's attention, and this method can reduce TiO effectively
2Energy gap expands its photoresponse scope to visible region from ultraviolet region.Recently, adopt organic dyestuff and have the polymer of conjugated unsaturation TiO
2Carry out modification, make it have visible light catalysis activity and also caused attention, but stability and life-span are generally not ideal.
(3) summary of the invention:
In view of the above-mentioned state of the art, the invention provides the visible light catalyst and preparation method thereof of a kind of novel degradable organic pollution of the above-mentioned shortcoming of effective improvement, utilize PVA (polyvinyl alcohol) and Ti (OH)
4Obtain a kind of novel visible catalyst TiO by Hydrothermal Preparation
2/ D-PVA, result of study shows, it can be under radiation of visible light effective degradation of organic substances, have higher using value.
To achieve these goals, the solution of the present invention is:
A kind of visible light catalyst of novel degradable organic pollution, described visible light catalyst are with Ti (OH)
4, with Ti (OH)
4The titanium dioxide of the degraded PVA coating modification that obtains with Hydrothermal Preparation of the amount of substance PVA that counts 8～32 gram/moles, be abbreviated as TiO
2/ D-PVA.
Hydro-thermal method of the present invention is with Ti (OH)
4, with Ti (OH)
4Amount of substance count the PVA of 8～32 gram/moles and deionized water and pack in the autoclave, reaction makes TiO under 160～200 ℃ of conditions
2/ D-PVA, the quality of described deionized water is pressed Ti (OH)
4Amount of substance count 1～6.4 kg/mol.
Prepare the method for the visible light catalyst of degrading organic pollutant of the present invention, comprise the steps:
(1) with PVA, Ti (OH)
4Pack in the autoclave with deionized water, the quality of PVA is pressed Ti (OH)
4Amount of substance count 8～32 gram/moles, the quality of deionized water is pressed Ti (OH)
4Amount of substance count 1～6.4 kg/mol;
(2) under agitation be heated to 160～200 ℃;
(3) isothermal reaction stopped heating after 4～10 hours, was cooled to room temperature;
(4) under the room temperature with the product suction filtration, get filter cake and spend deionised water, promptly get TiO after the drying
2/ D-PVA.
Preferably, the degree of polymerization of described PVA is 124～1750.
Ti of the present invention (OH)
4Can come from commercially available or by removing Ti (OH)
4Other titanium source in addition makes with the aqueous alkali hydrolysis 40～90 ℃ of temperature.
Described other titanium source is preferably TiOSO
4Or Ti (SO
4)
2
Preparation Ti (OH)
4Described in the preferred ammoniacal liquor of aqueous alkali, the NaOH aqueous solution or the KOH aqueous solution, the concentration of the aqueous alkali of described adding is 1～5molL
-1
It is 40～90 ℃ of temperature conditions hydrolysis 2～4 hours that described hydrolysis is recommended.
Concrete, Ti of the present invention (OH)
4The preparation method may further comprise the steps:
A, under 40～90 ℃ of temperature conditions, deionized water dissolving is under agitation used in other titanium source; The deionized water quality is counted 1～3 kilogram/equivalent by the equivalents of titaniferous in other titanium source;
B, slowly add aqueous alkali, reach 8.0～10.0, obtain white suspension up to the pH value;
C, white suspension is continued isothermal reaction 2～4 hours;
D, white suspension is cooled to room temperature, suction filtration then, filter cake spends deionised water, in filtrate with Ba (NO
3)
2Can not detect SO
4 2-, the filter cake of washing is Ti (OH)
4
Concrete, prepare presoma Ti (OH) in other titanium source of use
4The time, the visible light catalyst of degrading organic pollutant of the present invention can prepare as follows:
1, Ti (SO
4)
2Or TiOSO
4For the titanium source prepares presoma Ti (OH)
4:
A, under 40～90 ℃ of temperature conditions, with Ti (SO
4)
2Or TiOSO
4Fully stir with deionized water, fully dissolving; The deionized water quality is counted 1～3 kilogram/equivalent by the equivalents of titaniferous in other titanium source;
B, slowly add 1～5molL
-1Aqueous alkali, reach 8.0～10.0 up to the pH value, obtain white suspension;
C, white suspension was continued isothermal reactions 2～4 hours at 40～90 ℃;
D, white suspension is cooled to room temperature, suction filtration then, filter cake spends deionised water, in filtrate with Ba (NO
3)
2Can not detect SO
4 2-, the filter cake of washing is Ti (OH)
4
2, Hydrothermal Preparation visible light catalyst TiO
2/ D-PVA:
(1) the whole Ti (OH) that PVA, step 1 made
4Pack in the autoclave with deionized water, the quality of PVA is pressed Ti (OH)
4Amount of substance count 8～32 gram/moles, the quality of deionized water is pressed Ti (OH)
4Amount of substance count 1～6.4 kg/mol;
(2) under agitation be heated to 160～200 ℃;
(3) isothermal reaction stopped heating after 4～10 hours, was cooled to room temperature;
(4) under the room temperature with the product suction filtration, get filter cake and spend deionised water, make visible light catalyst TiO after the drying
2/ D-PVA.
System of the present invention is compared with existing catalysis material and technology of preparing, has following beneficial effect:
1, can be at degradation of organic substances under the radiation of visible light;
2, raw material be easy to get, inexpensive;
3, preparation technology's simple controllable, equipment needed thereby is simple;
4, product is stable, long service life.
(4) embodiment
The present invention is described further below in conjunction with specific embodiment, but protection scope of the present invention is not limited in this:
Embodiment 1:
Restrain technical grade TiOSO at 90 ℃ with 106.5
4(TiOSO
42H
2The mass fraction of O is 46%) and 300g deionized water mixing stirring, dissolving obtains settled solution fully; Slowly add 1molL
-1NaOH solution, reach 8.0 up to the pH value, this moment colourless transparent liquid become white suspension; White suspension is continued isothermal reaction 2 hours down at 90 ℃; White suspension is cooled to room temperature, then with deionized water filtering and washing repeatedly, in filtrate with Ba (NO
3)
2Can not detect SO
4 2-, make 0.25 mole of Ti (OH)
4
Embodiment 2:
Restrain technical grade TiOSO at 40 ℃ with 106.5
4(TiOSO
42H
2The mass fraction of O is 46%) and 250g deionized water mixing stirring, dissolving obtains settled solution fully; Slowly add 1molL
-1Ammoniacal liquor, reach 10.0 up to the pH value, this moment colourless transparent liquid become white suspension; White suspension is continued isothermal reaction 4 hours down at 40 ℃; White suspension is cooled to room temperature, then with deionized water filtering and washing repeatedly, in filtrate with Ba (NO
3)
2Can not detect SO
4 2-, make 0.25 mole of Ti (OH)
4
Embodiment 3:
Restrain Ti (SO at 80 ℃ with 60
4)
2Mix stirring with the 750g deionized water, dissolving obtains settled solution fully; Slowly add 5molL
-1KOH solution, reach 8.0 up to the pH value, this moment colourless transparent liquid become white suspension; White suspension is continued isothermal reaction 3 hours down at 90 ℃; White suspension is cooled to room temperature, then with deionized water filtering and washing repeatedly, in filtrate with Ba (NO
3)
2Can not detect SO
4 2-, make 0.25 mole of Ti (OH)
4
Embodiment 4:
Restrain Ti (SO at 60 ℃ with 60
4)
2Mix stirring with the 750g deionized water, dissolving obtains settled solution fully; Slowly add 5molL
-1NaOH solution, reach 10.0 up to the pH value, this moment colourless transparent liquid become white suspension; White suspension is continued isothermal reaction 3 hours down at 60 ℃; White suspension is cooled to room temperature, then with deionized water filtering and washing repeatedly, in filtrate with Ba (NO
3)
2Can not detect SO
4 2-, make 0.25 mole of Ti (OH)
4
Embodiment 5
Restrain 0.25 mole of Ti (OH) that PVA (degree of polymerization is 124), embodiment 1 prepare with 2 respectively
4Pack in the autoclave with the 250g deionized water; Under agitation be heated to 160 ℃; After the isothermal reaction 4 hours, stop heating, be cooled to room temperature; Under the room temperature with the product suction filtration, get filter cake spend dry after the deionised water TiO
2/ D-PVA19.5 gram.
Embodiment 6
Restrain 0.25 mole of Ti (OH) that PVA (degree of polymerization is 1750), embodiment 2 prepare with 2 respectively
4Pack in the autoclave with the 1600g deionized water; Under agitation be heated to 200 ℃; After the isothermal reaction 6 hours, stop heating, be cooled to room temperature; Under the room temperature with the product suction filtration, get filter cake spend dry after the deionised water TiO
2/ D-PVA18.6 gram.
Embodiment 7
Restrain 0.25 mole of Ti (OH) that PVA (degree of polymerization is 124), embodiment 3 prepare with 8 respectively
4Pack in the autoclave with 500 gram deionized waters; Under agitation be heated to 200 ℃; After the isothermal reaction 10 hours, stop heating, be cooled to room temperature; Under the room temperature with the product suction filtration, get filter cake spend dry after the deionised water TiO
2/ D-PVA19.8 gram.
Embodiment 8
Restrain 0.25 mole of Ti (OH) that PVA (degree of polymerization is 1750), embodiment 4 prepare with 8 respectively
4Pack in the autoclave with 1000 gram deionized waters; Under agitation be heated to 180 ℃; After the isothermal reaction 10 hours, stop heating, be cooled to room temperature; Under the room temperature with the product suction filtration, get filter cake spend dry after the deionised water TiO
2/ D-PVA19.3 gram.
Embodiment 9
Respectively with 2 gram PVA (degree of polymerization is 124), 0.25 mole of commercially available Ti (OH)
4Pack in the autoclave with the 1000g deionized water; Under agitation be heated to 170 ℃; After the isothermal reaction 8 hours, stop heating, be cooled to room temperature; Under the room temperature with the product suction filtration, get filter cake spend dry after the deionised water TiO
2/ D-PVA18.9 gram.
Embodiment 10
Adopt the methyl orange degradation method to TiO
2/ D-PVA carries out the photocatalytic activity test.
Experimental procedure: take by weighing the 0.5g photochemical catalyst and place the 1L beaker, add 200ml methyl orange solution (10mgL
-1), beaker is placed 25 ℃ of recirculated waters, magnetic agitation, with the 200W dysprosium lamp as light source, place apart from liquid level in the beaker be 16cm directly over, and filter the ultraviolet light of wavelength less than 400nm with uv filter.Before illumination, suspension stirs 45min in the dark, makes methyl orange reach the adsorption-desorption balance in photocatalyst surface.Suspension takes out 4ml behind high speed centrifugation by illumination after 40 hours, gets supernatant liquor with 722 type spectrophotometric determination methyl orange concentration.
| Sample number into spectrum | To methyl orange degradation rate/% |
| Embodiment 5 | 84.9 |
| Embodiment 6 | 61.2 |
| Embodiment 7 | 51.3 |
| Embodiment 8 | 75.3 |
| Embodiment 9 | 67.5 |
Claims (10)
1, a kind of visible light catalyst of novel degradable organic pollution is characterized in that described visible light catalyst is with Ti (OH)
4, with Ti (OH)
4Amount of substance count the TiO that the PVA of 8～32 gram/moles obtains with Hydrothermal Preparation
2/ D-PVA.
2, the visible light catalyst of novel degradable organic pollution as claimed in claim 1 is characterized in that described hydro-thermal method is with Ti (OH)
4, with Ti (OH)
4Amount of substance count the PVA of 8～32 gram/moles and deionized water and pack in the autoclave, reaction makes TiO under 160～200 ℃ of conditions
2/ D-PVA, the quality of described deionized water is pressed Ti (OH)
4Amount of substance count 1～6.4 kg/mol.
3, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 1 is characterized in that described method comprises the steps:
(1) with PVA, Ti (OH)
4Pack in the autoclave with deionized water, the quality of PVA is pressed Ti (OH)
4Amount of substance count 8～32 gram/moles, the quality of deionized water is pressed Ti (OH)
4Amount of substance count 1～6.4 kg/mol;
(2) under agitation be heated to 160～200 ℃;
(3) isothermal reaction stopped heating after 4～10 hours, was cooled to room temperature;
(4) under the room temperature with the product suction filtration, get filter cake and spend deionised water, promptly get TiO after the drying
2/ D-PVA.
4, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 3, the degree of polymerization that it is characterized in that described PVA is 124～1750.
5, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 3 is characterised in that described Ti (OH)
4Be by removing Ti (OH)
4Hydrolysis makes in the aqueous alkali of other titanium source under 40～90 ℃ of temperature conditions in addition.
6, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 5 is characterized in that described other titanium source is TiOSO
4Or Ti (SO
4)
2
7, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 5 is characterized in that described aqueous alkali is ammoniacal liquor, the NaOH aqueous solution or the KOH aqueous solution.
8, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 5 is characterized in that described hydrolysis is hydrolysis 2～4 hours under 40～90 ℃ of temperature conditions.
9, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 5 is characterized in that described hydrolysis may further comprise the steps:
A, under 40～90 ℃ of temperature conditions, deionized water dissolving is under agitation used in other titanium source; The deionized water quality is counted 1～3 kilogram-equivalent weight by the equivalents of titaniferous in other titanium source;
B, slowly add aqueous alkali, reach 8.0～10.0, obtain white suspension up to the pH value;
C, white suspension is continued isothermal reaction 2～4 hours;
D, white suspension is cooled to room temperature, suction filtration then, filter cake spends deionised water, in filtrate with Ba (NO
3)
2Can not detect SO
4 2-, the filter cake of washing is Ti (OH)
4
10, the method for the visible light catalyst of preparation degrading organic pollutant as claimed in claim 9 is characterized in that the concentration of the aqueous alkali that adds among the described step B is 1～5molL
-1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097615A CN101530791A (en) | 2009-04-10 | 2009-04-10 | New visible-light catalyst capable of degrading organic pollutant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097615A CN101530791A (en) | 2009-04-10 | 2009-04-10 | New visible-light catalyst capable of degrading organic pollutant |
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| Publication Number | Publication Date |
|---|---|
| CN101530791A true CN101530791A (en) | 2009-09-16 |
Family
ID=41101777
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910097615A Pending CN101530791A (en) | 2009-04-10 | 2009-04-10 | New visible-light catalyst capable of degrading organic pollutant |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205253A (en) * | 2011-04-18 | 2011-10-05 | 四川大学 | Supported photocatalyst with high activity under visible light and preparation method thereof |
| CN105195232A (en) * | 2015-09-09 | 2015-12-30 | 阜阳师范学院 | Photocatalyst PVA-TiO2, and preparation method and application thereof |
| CN113633048A (en) * | 2021-08-06 | 2021-11-12 | 欧阳峰 | Mask based on weak light photocatalysis antibacterial and antivirus and derivative coating material |
-
2009
- 2009-04-10 CN CN200910097615A patent/CN101530791A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205253A (en) * | 2011-04-18 | 2011-10-05 | 四川大学 | Supported photocatalyst with high activity under visible light and preparation method thereof |
| CN105195232A (en) * | 2015-09-09 | 2015-12-30 | 阜阳师范学院 | Photocatalyst PVA-TiO2, and preparation method and application thereof |
| CN113633048A (en) * | 2021-08-06 | 2021-11-12 | 欧阳峰 | Mask based on weak light photocatalysis antibacterial and antivirus and derivative coating material |
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