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Visible light-induced degradation of carbon tetrachloride on dye-sensitized TiO2
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, YM | - |
dc.contributor.author | Choi, WY | - |
dc.contributor.author | Lee, Chung-Hak | - |
dc.contributor.author | Hyeon, Taeghwan | - |
dc.contributor.author | Lee, Ho In | - |
dc.date.accessioned | 2020-04-27T13:44:39Z | - |
dc.date.available | 2020-04-27T13:44:39Z | - |
dc.date.created | 2020-03-20 | - |
dc.date.created | 2020-03-20 | - |
dc.date.issued | 2001-03 | - |
dc.identifier.citation | Environmental Science and Technology, Vol.35 No.5, pp.966-970 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.other | 93013 | - |
dc.identifier.uri | https://hdl.handle.net/10371/166103 | - |
dc.description.abstract | This study investigated an application of TiO2 photocatalyst sensitized with tris(4,4'-dicarboxy-2,2'-bipyridyl)ruthenium(II) complex to CCl4 degradation under visible light;irradiation, By injecting electrons from the photoexcited:sensitizer to the conduction band, the sensitized TiO2 degraded CCl4 under the irradiation of lambda > 420 nm. The quantum yield of CCl4 dechlorination was about 10(-3). The dechlorination rate of CCl4 was reduced in the presence of dissolved O-2 due to its competition for conduction band electrons. The photolysis rate was dependent on pH due to the strong pH dependence of the sensitizer adsorption on TiO2 surface with a maximum degradation rate achieved at pH similar to3. A two-site Langmurian model successfully described the adsorption of the sensitizer on TiO2 particles. The monolayer coverage was achieved at the added sensitizer concentration of 10 muM at [TiO2] = 0.5 g/L. However, the photolysis rate of CCl4 showed a maximum at a sensitizer surface coverage of 0.3 monolayer. Since the photoinduced electron injection gradually depleted active sensitizer molecules an TiO2, sacrificial electron donors to regenerate the sensitizer were sought. 2-Propanol as an electron donor was efficient in the present (RuL3)-L-II/TiO2/CCl4 system, which showed no sign of deceleration in the dechlorination rate up to 6 h of irradiation. | - |
dc.language | 영어 | - |
dc.publisher | American Chemical Society | - |
dc.title | Visible light-induced degradation of carbon tetrachloride on dye-sensitized TiO2 | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 이정학 | - |
dc.contributor.AlternativeAuthor | 이호인 | - |
dc.contributor.AlternativeAuthor | 현택환 | - |
dc.identifier.doi | 10.1021/es001245e | - |
dc.citation.journaltitle | Environmental Science and Technology | - |
dc.identifier.wosid | 000167296400044 | - |
dc.identifier.scopusid | 2-s2.0-0035264707 | - |
dc.citation.endpage | 970 | - |
dc.citation.number | 5 | - |
dc.citation.startpage | 966 | - |
dc.citation.volume | 35 | - |
dc.identifier.sci | 000167296400044 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Lee, Chung-Hak | - |
dc.contributor.affiliatedAuthor | Hyeon, Taeghwan | - |
dc.contributor.affiliatedAuthor | Lee, Ho In | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | SEMICONDUCTOR PARTICULATE SYSTEMS | - |
dc.subject.keywordPlus | ELECTRON-TRANSFER REACTIONS | - |
dc.subject.keywordPlus | TITANIUM-DIOXIDE | - |
dc.subject.keywordPlus | HETEROGENEOUS PHOTOCATALYSIS | - |
dc.subject.keywordPlus | ENVIRONMENTAL PHOTOCHEMISTRY | - |
dc.subject.keywordPlus | CHARGE INJECTION | - |
dc.subject.keywordPlus | PHOTOSENSITIZATION | - |
dc.subject.keywordPlus | PHOTOELECTROCHEMISTRY | - |
dc.subject.keywordPlus | SURFACES | - |
dc.subject.keywordPlus | PHOTOLYSIS | - |
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