Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Kim, Soon Hyun | - |
dc.contributor.author | Hwang, Seong-Ju | - |
dc.contributor.author | Choi, Wonyong | - |
dc.date.available | 2017-07-05T09:04:40Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2005-12 | - |
dc.identifier.citation | Journal of Physical Chemistry B, v.109, no.51, pp.24260 - 24267 | - |
dc.identifier.issn | 1520-6106 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/2530 | - |
dc.description.abstract | Platinum-ion-doped TiO2 (Ption-TiO2) was synthesized by a sol-gel method, and its visible light photocatalytic activities were successfully demonstrated for the oxidative and reductive degradation of chlorinated organic compounds. Ption-TiO2 exhibited a yellow-brown color, and its band gap was lower than that of undoped TiO2 by about 0.2 eV. The flat band potential of Pt ion-TiO2 was positively shifted by 50 mV compared with that of undoped TiO2. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy analyses showed that the Pt ions substituted in the TiO2 lattice were present mainly in the Pt(IV) state with some Pt(II) on the sample surface. Ption-TiO2 exhibited higher photocatalytic activities than undoped TiO2 under UV irradiation as well. The visible light activity of Ption-TiO2 was strongly affected by the calcination temperature and the concentration of Pt ion dopant, which were optimal at 673 K and 0.5 atom %, respectively. Under visible irradiation, Ption-TiO2 degraded dichloroacetate and 4-chlorophenol through an oxidative path and trichloroacetate via a reductive path. The activity of Ption-TiO2 was not reduced when used repeatedly under visible light. However, visible-light-illuminated Ption-TiO2 could not degrade substrates such as tetramethylammonium and trichloroethylene, which are degraded with UV-illuminated TiO2. The characteristics and reactivities of Ption-TiO2 as a new visible light photocatalyst were investigated in various ways and discussed in detail. © 2005 American Chemical Society. | - |
dc.language | English | - |
dc.publisher | American Chemical Society | - |
dc.title | Visible light active platinum-ion-doped TiO2 photocatalyst | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/jp055278y | - |
dc.identifier.wosid | 000234259900009 | - |
dc.identifier.scopusid | 2-s2.0-30344454694 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.citation.publicationname | Journal of Physical Chemistry B | - |
dc.contributor.nonIdAuthor | Hwang, Seong-Ju | - |
dc.contributor.nonIdAuthor | Choi, Wonyong | - |
dc.identifier.citationVolume | 109 | - |
dc.identifier.citationNumber | 51 | - |
dc.identifier.citationStartPage | 24260 | - |
dc.identifier.citationEndPage | 24267 | - |
dc.identifier.citationTitle | Journal of Physical Chemistry B | - |
dc.type.journalArticle | Article | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | ELECTRON-HOLE RECOMBINATION | - |
dc.subject.keywordPlus | INDUCED WATER CLEAVAGE | - |
dc.subject.keywordPlus | TITANIUM-DIOXIDE | - |
dc.subject.keywordPlus | PHOTOELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | INDUCED DEGRADATION | - |
dc.subject.keywordPlus | SENSITIZED TIO2 | - |
dc.subject.keywordPlus | SEMICONDUCTOR | - |
dc.subject.keywordPlus | PARTICLES | - |
dc.subject.keywordPlus | PHOTOOXIDATION | - |
dc.subject.keywordPlus | DETOXIFICATION | - |
dc.contributor.affiliatedAuthor | Kim, Soon Hyun | - |
dc.contributor.affiliatedAuthor | Hwang, Seong-Ju | - |
dc.contributor.affiliatedAuthor | Choi, Wonyong | - |
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