CN101543785A - Hollow zinc sulfide doped photocatalyst with visible light response and preparation method thereof - Google Patents
Hollow zinc sulfide doped photocatalyst with visible light response and preparation method thereof Download PDFInfo
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- CN101543785A CN101543785A CN200910068690A CN200910068690A CN101543785A CN 101543785 A CN101543785 A CN 101543785A CN 200910068690 A CN200910068690 A CN 200910068690A CN 200910068690 A CN200910068690 A CN 200910068690A CN 101543785 A CN101543785 A CN 101543785A
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- visible light
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Abstract
The invention relates to a hollow zinc sulfide doped photocatalyst with visible light response and a preparation method thereof, and belongs to the field of inorganic nanometer photocatalytic materials. The catalyst consists of one of nanometer hollow zinc sulfide and cadmium ions or cuprous ions. The photocatalyst prepared by the method has photocataltic activity in a wide waveband range, can photolyze and purify toxic and harmful chemical substances under radiation of visible light or natural light.
Description
Technical field
The present invention relates to a kind of photochemical catalyst, particularly relate to a kind of visible light-responded photochemical catalyst that has.
The invention still further relates to above-mentioned Preparation of catalysts method.
The invention still further relates to the purposes of above-mentioned catalyst.
Background technology
Zinc sulphide is a kind of important wide bandgap semiconductor (Eg=3.6eV).It is one of semiconductor of finding the earliest, also is one of most important material of extensive application on electronics industry.During the zinc sulphide doping metals, under ultraviolet light, X ray, cathode-ray, electron stream excite, good luminescent properties is arranged, make it on effective phosphor of light emitting diode, flat-panel monitor, have widely and use.Zinc sulphide has high refraction coefficient (2.27), has excellent transmitance, makes it also have place to show one's prowess to the photon crystal device of near infrared region working in visible light.Zinc sulphide at room temperature has two kinds of structure special-shaped bodies, promptly six sides' wurtzite structure and cube zincblende lattce structure.In addition, the hollow nano structural material is because its special physical property, has potential using value in that catalyst, photonic crystal and controllable sustained-release are technical, thereby caused people's extensive studies interest.
Summary of the invention
Meaning of the present invention is to provide a kind of visible light-responded photochemical catalyst that has, this doping hollow zinc sulphide photochemical catalyst, can can keep good stable and advantages of high catalytic activity again effectively by excited by visible light, preparation technology is simple, with low cost simultaneously.
Photochemical catalyst provided by the invention is characterized in that by a kind of composition the in hollow nano zinc sulphide and cadmium ion, the cuprous ion this catalyst is to be mixed by a kind of composition in hollow zinc sulphide and cadmium ion or the cuprous ion.The mol ratio of zinc ion and other metal ion is 1:0.001～1, and hollow zinc sulphide particles diameter is between 5 nanometers to 10 micron.
Preparation method with visible light-responded doped zinc sulphide photochemical catalyst of the present invention is as follows:
The preparation of hollow zinc sulphide: certain amount of nano zinc oxide is dissolved in 300 milliliter of 0.1～3 mol sodium sulfide solution, at room temperature ultrasonic agitation is 24 hours, after filtering and washing will be precipitated, vulcanized the zinc/zinc oxide nucleocapsid structure in 6 hours then 80 ℃ of vacuum drying.Be dispersed in 100 ml deionized water a certain amount of sulfuration zinc/zinc oxide is ultrasonic, with the pH value is that 0.5 hydrochloric acid is regulated above-mentioned pH value of solution value to 4, at room temperature ultrasonic agitation obtained the hollow zinc sulphide particles in 6 hours, and 80 ℃ of dryings of particle filtering and washing final vacuum were obtained end product in 6 hours.
The preparation of doping hollow zinc sulphide: a certain amount of caddy or stannous chloride are dissolved in the certain amount of ammonia water, and dilute this solution to 100 milliliter, a certain amount of hollow zinc sulphide particles is joined in the above-mentioned solution, keeping the mol ratio of zinc ion and cadmium or cuprous ion is 1:0.001～1, and ultrasonic agitation obtained the hollow zinc sulphide photochemical catalyst of cadmium or cuprous ion doping in 1 hour.
Of the present invention have visible light-responded photochemical catalyst and can be used for the organic pollution in air, waste water, surface water and the drinking water and the photocatalysis treatment of heavy metal ion.
The photocatalytic activity of degradation of methylene blue test concrete grammar and condition are as follows under visible radiation:
The photochemical catalytic oxidation activity of catalyst is to carry out in homemade photo catalysis reactor.Employing 300W xenon lamp (λ〉420nm) be radiating light source, reactant liquor is the aqueous solution of methylene blue of 250 milliliter of 10 mg/litre, the catalyst addition is 1.0 grams.Under violent stirring, extracted a small amount of reactant liquor, measure solution absorbance at the 665nm place every 30 minutes.Determine solution concentration according to the concentration～absorbance calibration curve of methylene blue again.
Specific embodiments
Embodiment 1
1 mole nano zine oxide is dissolved in the sodium sulfide solution of 300 milliliter of 1 mol, ultrasonic agitation is after 24 hours, and collecting precipitation spends deionised water repeatedly, obtains vulcanizing the zinc/zinc oxide precipitation in 6 hours 80 ℃ of vacuum drying.Getting 5 gram sulfuration zinc/zinc oxide particles and be dispersed in 100 ml deionized water, is 0.5 watery hydrochloric acid regulation system pH value to 4 with the pH value, and room temperature ultrasonic agitation 6 hours obtains hollow zinc sulphide.The caddy of 1 mM is dissolved in 100 ml deionized water, and adds the ammoniacal liquor of 5 mMs, the normal temperature ultrasonic agitation obtained the hollow zinc sulphide photochemical catalyst that cadmium mixes after 0.5 hour.
Embodiment 2
Caddy in the embodiment 1 is become stannous chloride, and other condition is constant.
Embodiment 3
Caddy in the embodiment 1 is become 10 mMs, and other condition is constant.
Embodiment 4
Caddy in the embodiment 1 is become 0.1 mole, and other condition is constant.
Embodiment 5
1 mM caddy in the embodiment 1 is become 10 mM stannous chlorides, and other condition is constant.
Embodiment 6
1 mM caddy in the embodiment 1 is become 0.1 mole of stannous chloride, and other condition is constant.
Embodiment 7
Vulcanized sodium concentration in the embodiment 1 is become 2 mol, and other condition is constant.
Embodiment 8
Vulcanized sodium concentration in the embodiment 1 is become 0.5 mol, and other condition is constant.
The prepared photochemical catalyst of the present invention can be carried on the carrier, the invention is not restricted to above embodiment.
Gained photochemical catalyst in the embodiment light-catalyzed reaction test under the radiation of visible light, concrete outcome such as table 1 have been carried out.
The catalytic performance of table 1 doping hollow cadmium sulfide photochemical catalyst
| Sample number into spectrum | Visible radiation 3h methylene blue degradation rate |
| Embodiment 1 | 92％ |
| Embodiment 2 | 89％ |
| Embodiment 3 | 88％ |
| Embodiment 4 | 83％ |
| Embodiment 5 | 85％ |
| Embodiment 6 | 75％ |
| Embodiment 7 | 93％ |
| Embodiment 8 | 91％ |
Claims (4)
1. visible light-responded doping hollow zinc sulphide photochemical catalyst, composition comprises hollow nano zinc sulphide, it is characterized in that this catalyst is to be mixed by a kind of composition in hollow zinc sulphide and cadmium ion or the cuprous ion.The mol ratio of zinc ion and other metal ion is 1:0.001～1, and hollow zinc sulphide particles diameter is between 5 nanometers to 10 micron;
2. according to a kind of photochemical catalyst of claim 1, it is characterized in that: light reaction is carried out under visible light, ultraviolet light and sunshine;
3. a method for preparing the described photochemical catalyst of claim 1 adopts the template production technology, it is characterized in that the template in this method is a nano zine oxide, and the sulphur source is a vulcanized sodium;
4. be used for the organic pollution of air, waste water, surface water and drinking water and the photocatalysis treatment of heavy metal ion according to the described photochemical catalyst of above-mentioned each claim.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107904A (en) * | 2011-03-11 | 2011-06-29 | 同济大学 | Method for preparing cadmium sulfide or zinc sulfide hollow nano diamonds by using non-template method |
| CN102125860A (en) * | 2011-01-10 | 2011-07-20 | 内蒙古大学 | Preparation method of photochemical catalyst Na2Ta2O6(F) |
| CN102950011A (en) * | 2012-09-20 | 2013-03-06 | 中国科学院长春应用化学研究所 | Photocatalysis composite material and preparation method thereof |
| CN103143371A (en) * | 2013-03-18 | 2013-06-12 | 新疆大学 | Solid phase preparation of heterostructured zinc sulfide photocatalyst |
| CN104010710A (en) * | 2012-05-08 | 2014-08-27 | 韩国Energy技术硏究院 | Antimicrobial filter adopting optical fibers and air cleaner comprising same |
| CN108298575A (en) * | 2018-01-31 | 2018-07-20 | 淮阴工学院 | The synthetic method of high price sulfur doping zinc oxide photoelectric material |
-
2009
- 2009-04-30 CN CN200910068690A patent/CN101543785A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125860A (en) * | 2011-01-10 | 2011-07-20 | 内蒙古大学 | Preparation method of photochemical catalyst Na2Ta2O6(F) |
| CN102125860B (en) * | 2011-01-10 | 2012-08-22 | 内蒙古大学 | Preparation method of photochemical catalyst Na2Ta2O6(F) |
| CN102107904A (en) * | 2011-03-11 | 2011-06-29 | 同济大学 | Method for preparing cadmium sulfide or zinc sulfide hollow nano diamonds by using non-template method |
| CN102107904B (en) * | 2011-03-11 | 2012-06-06 | 同济大学 | Method for preparing cadmium sulfide or zinc sulfide hollow nano diamonds by using non-template method |
| CN104010710A (en) * | 2012-05-08 | 2014-08-27 | 韩国Energy技术硏究院 | Antimicrobial filter adopting optical fibers and air cleaner comprising same |
| CN104010710B (en) * | 2012-05-08 | 2016-06-08 | 韩国Energy技术硏究院 | Adopt the antibacterial air filter of fiber optics and comprise its air purifier |
| US9393339B2 (en) | 2012-05-08 | 2016-07-19 | Korea Institute Of Energy Research | Antimicrobial filter adopting optical fibers and air cleaner comprising same |
| CN102950011A (en) * | 2012-09-20 | 2013-03-06 | 中国科学院长春应用化学研究所 | Photocatalysis composite material and preparation method thereof |
| CN102950011B (en) * | 2012-09-20 | 2015-05-20 | 中国科学院长春应用化学研究所 | Photocatalysis composite material and preparation method thereof |
| CN103143371A (en) * | 2013-03-18 | 2013-06-12 | 新疆大学 | Solid phase preparation of heterostructured zinc sulfide photocatalyst |
| CN108298575A (en) * | 2018-01-31 | 2018-07-20 | 淮阴工学院 | The synthetic method of high price sulfur doping zinc oxide photoelectric material |
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Open date: 20090930 |