DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lim, J | - |
dc.contributor.author | Monllor-Satoca, D | - |
dc.contributor.author | Jang, JS | - |
dc.contributor.author | Lee, S | - |
dc.contributor.author | Choi, W | - |
dc.date.accessioned | 2016-03-31T08:19:10Z | - |
dc.date.available | 2016-03-31T08:19:10Z | - |
dc.date.created | 2014-02-11 | - |
dc.date.issued | 2014-06-25 | - |
dc.identifier.issn | 0926-3373 | - |
dc.identifier.other | 2014-OAK-0000028785 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/15041 | - |
dc.description.abstract | Visible light photocatalysis by TiO2 nanoparticles modified with both fullerol complexation and Nb-doping (fullerol/Nb-TiO2) demonstrated an enhanced performance. Nb-doped TiO2 (Nb-TiO2) was firstly prepared by a conventional sol-gel method, and subsequently fullerol was adsorbed on the surface of Nb-TiO2. The physicochemical and optical properties of as-prepared fullerol/Nb-TiO2 were analyzed by various spectroscopic methods (TEM, EELS, XPS, and DRS). The adsorption of fullerol on Nb-TiO2 surface increased the visible light absorption through a surface-complex charge-transfer (SCCT) mechanism. Nb-doping enhanced the charge transport and induced the Ti cation vacancies that retarded the recombination of photo-generated charge pairs by trapping the electrons injected from the HOMO level of fullerol. Due to the advantage of simultaneous modification of fullerol and Nb-doping, the visible light photoactivity of fullerol/Nb-TiO2 was more enhanced than either Nb-TiO2 or fullerol/TiO2. The photocatalytic activities of fullerol/Nb-TiO2 for the reduction of chromate (CrVI), the oxidation of iodide, and the degradation of 4-chlorophenol were all higher than bare TiO2 and singly modified TiO2 (i.e., Nb-TiO2 and fullerol/TiO2) under visible light (λ>420nm). A similar result was also confirmed for their photoelectrochemical behavior: the electrode made of fullerol/Nb-TiO2 exhibited an enhanced photocurrent under visible light. On the other hand, the decay of open-circuit potential of the fullerol/Nb-TiO2 electrode after turning off the visible light was markedly slower than either that of Nb-TiO2 or fullerol/TiO2, which implies the retarded recombination of photo-generated charge pairs on fullerol/Nb-TiO2. In addition, the electrochemical impedance spectroscopic (EIS) data supported that the charge transfer resistance is lower with the fullerol/Nb-TiO2 than either Nb-TiO2 or fullerol/TiO2. This specific combination of the bulk (Nb-doping) and surface (fullerol complexation) modifications of titanium dioxide might be extended to other cases of bulk+surface combined modifications. © 2014 Elsevier B.V. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.relation.isPartOf | APPLIED CATALYSIS B-ENVIRONMENTAL | - |
dc.title | Visible Light Photocatalysis of Fullerol-Complexed TiO2 Enhanced by Nb Doping | - |
dc.type | Article | - |
dc.contributor.college | 환경공학부 | - |
dc.identifier.doi | 10.1016/J.APCATB.2014.01.026 | - |
dc.author.google | Lim J., Monllor-Satoca D., Jang J.S., Lee S., Choi W. | - |
dc.relation.volume | 152-153 | - |
dc.relation.issue | 1 | - |
dc.relation.startpage | 233 | - |
dc.relation.lastpage | 240 | - |
dc.contributor.id | 10105056 | - |
dc.relation.journal | APPLIED CATALYSIS B-ENVIRONMENTAL | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | APPLIED CATALYSIS B-ENVIRONMENTAL, v.152-153, no.1, pp.233 - 240 | - |
dc.identifier.wosid | 000334481800027 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 240 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 233 | - |
dc.citation.title | APPLIED CATALYSIS B-ENVIRONMENTAL | - |
dc.citation.volume | 152-153 | - |
dc.contributor.affiliatedAuthor | Lim, J | - |
dc.contributor.affiliatedAuthor | Choi, W | - |
dc.identifier.scopusid | 2-s2.0-84894027712 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 36 | - |
dc.description.scptc | 30 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | DYE-SENSITIZED TIO2 | - |
dc.subject.keywordPlus | ANATASE TIO2 | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | HYDROGEN | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | POLLUTANTS | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | INSIGHTS | - |
dc.subject.keywordAuthor | Visible light photocatalyst | - |
dc.subject.keywordAuthor | Titanium dioxide | - |
dc.subject.keywordAuthor | Surface-complex charge-transfer | - |
dc.subject.keywordAuthor | Impurity doping | - |
dc.subject.keywordAuthor | Degradation of water pollutants | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
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