Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Choi, Sung Kyu | - |
dc.contributor.author | Kim, Soonhyun | - |
dc.contributor.author | Ryu, Jungho | - |
dc.contributor.author | Lim, Sang Kyoo | - |
dc.contributor.author | Park, Hyunwoong | - |
dc.date.accessioned | 2024-03-15T16:16:11Z | - |
dc.date.available | 2024-03-15T16:16:11Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 1474-905X | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/56404 | - |
dc.description.abstract | Directionally grown TiO 2 nano-architectures can serve as effective platforms for photogenerated charges to flow vectorially through the architecture framework, promising an unexpectedly high efficiency. This study demonstrates that directionally aligned TiO 2 nanofibers (TNF) obtained via a simple rearrangement of randomly scattered TiO 2 nanoparticles (TNP) exhibit significantly enhanced activity in terms of hydrogen production from water under visible light (λ > 420 nm). It has been found that Eosin Y (EY)-sensitized hydrogen production with TNF is greater than those with TNP and commercial TiO 2 samples (Degussa P25 and Hombikat UV-100) by a factor of 7 and >140, respectively, in the presence of triethanolamine (TEOA) as an electron donor. The annealing of TNF at elevated temperatures reduces the amount of H 2 produced and changes various physicochemical properties. Attempts have been made to find correlation factors between hydrogen production and reaction parameters (e.g., pH-dependent EY adsorption, surface area, pore size, particle size, and anatase-to-rutile ratio), none of which have provided an apparent correlation. It was suggested that the interparticle electron transfer is facilitated when TiO 2 nanoparticles are physically interconnected, and TNF might work as a robust photo-antenna for efficiently collecting the photogenerated electrons. The photocurrent measurements in visible light-irradiated EY/TiO 2 suspensions indicate that the photocurrent of TNF is 50% higher than that of TNP, supporting the photo-antenna mechanism of TNF. © 2012 The Royal Society of Chemistry and Owner Societies. | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Titania nanofibers as a photo-antenna for dye-sensitized solar hydrogen | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c2pp25054c | - |
dc.identifier.wosid | 000307583800005 | - |
dc.identifier.scopusid | 2-s2.0-84865205933 | - |
dc.identifier.bibliographicCitation | Photochemical and Photobiological Sciences, v.11, no.9, pp.1437 - 1444 | - |
dc.subject.keywordPlus | Article | - |
dc.subject.keywordPlus | BACK ELECTRON-TRANSFER | - |
dc.subject.keywordPlus | Chemistry | - |
dc.subject.keywordPlus | Coloring Agent | - |
dc.subject.keywordPlus | Coloring Agents | - |
dc.subject.keywordPlus | emISSION | - |
dc.subject.keywordPlus | Energy Conversion | - |
dc.subject.keywordPlus | Eosin | - |
dc.subject.keywordPlus | EOSIN-Y | - |
dc.subject.keywordPlus | Eosine Yellowish-(YS) | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | Hydrogen | - |
dc.subject.keywordPlus | Hydrogen-Ion Concentration | - |
dc.subject.keywordPlus | INTERPARTICLE CHARGE-TRANSFER | - |
dc.subject.keywordPlus | Metal Nanoparticle | - |
dc.subject.keywordPlus | Metal Nanoparticles | - |
dc.subject.keywordPlus | Nanofiber | - |
dc.subject.keywordPlus | Nanofibers | - |
dc.subject.keywordPlus | pH | - |
dc.subject.keywordPlus | Photocatalysis | - |
dc.subject.keywordPlus | Sunlight | - |
dc.subject.keywordPlus | TiO2 NANOPARTICLES | - |
dc.subject.keywordPlus | Titanium | - |
dc.subject.keywordPlus | Titanium Dioxide | - |
dc.subject.keywordPlus | VISIBLE-LIGHT IRRADIATION | - |
dc.subject.keywordPlus | WATER | - |
dc.citation.endPage | 1444 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 1437 | - |
dc.citation.title | Photochemical and Photobiological Sciences | - |
dc.citation.volume | 11 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Biochemistry & Molecular Biology; Biophysics; Chemistry | - |
dc.relation.journalWebOfScienceCategory | Biochemistry & Molecular Biology; Biophysics; Chemistry, Physical | - |
dc.type.docType | Article | - |
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