Anatase phase formation kinetics in Ti and TiOx nanoparticles produced by gas-phase condensation
DC Field | Value | Language |
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dc.contributor.author | Sung, Yun-Mo | - |
dc.contributor.author | Park, Jun-Su | - |
dc.contributor.author | Kim, Tae Geun | - |
dc.date.accessioned | 2021-09-06T23:06:00Z | - |
dc.date.available | 2021-09-06T23:06:00Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2012-01-15 | - |
dc.identifier.issn | 0022-3093 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/109081 | - |
dc.description.abstract | Anatase TiO2 nanoparticles were successfully synthesized by post-heat treatments of partially crystalline Ti and amorphous TiOx nanoparticles, respectively produced by inert gas condensation and subsequent oxidation. The nanoparticles condensed on a liquid-nitrogen containing cooling finger (sample LN) were identified to be partially crystalline Ti phase with similar to 10-20 vol.% amorphous TiOx. On the other hand, those condensed on a room-temperature cooling finger (sample RT) were almost completely amorphous TiOx phase. Differential scanning calorimetry scan curves of as-oxidized samples were interpreted using Kissinger analysis, the non-isothermal kinetics, and activation energy for the anatase formation was determined as similar to 455 and 865 kJ/mot for samples LN and RT, respectively. As-oxidized samples LN and RT were heat treated at 400 degrees C for 2 h, respectively (samples LN-H and RT-H). Samples LN-H and RI-H showed the onset of UV-visible light absorption near 400 nm and the optical band gap of 3.12 and 321 eV, respectively, corresponding to anatase. The sample LN-H showed faster photocatalytic decomposition of methylene blue and rhodamine B dyes compared to the sample RI-H due to high crystallinity of anatase and rutile phases. (C) 2011 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | THIN-FILMS | - |
dc.subject | CRYSTALLIZATION | - |
dc.subject | TRANSFORMATION | - |
dc.subject | GROWTH | - |
dc.subject | SENSOR | - |
dc.subject | GLASS | - |
dc.title | Anatase phase formation kinetics in Ti and TiOx nanoparticles produced by gas-phase condensation | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Sung, Yun-Mo | - |
dc.contributor.affiliatedAuthor | Kim, Tae Geun | - |
dc.identifier.doi | 10.1016/j.jnoncrysol.2011.09.012 | - |
dc.identifier.scopusid | 2-s2.0-81855175340 | - |
dc.identifier.wosid | 000298909400008 | - |
dc.identifier.bibliographicCitation | JOURNAL OF NON-CRYSTALLINE SOLIDS, v.358, no.2, pp.182 - 187 | - |
dc.relation.isPartOf | JOURNAL OF NON-CRYSTALLINE SOLIDS | - |
dc.citation.title | JOURNAL OF NON-CRYSTALLINE SOLIDS | - |
dc.citation.volume | 358 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 182 | - |
dc.citation.endPage | 187 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Ceramics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | CRYSTALLIZATION | - |
dc.subject.keywordPlus | TRANSFORMATION | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | SENSOR | - |
dc.subject.keywordPlus | GLASS | - |
dc.subject.keywordAuthor | TiO2 | - |
dc.subject.keywordAuthor | Nanoparticles | - |
dc.subject.keywordAuthor | Photocatalyst | - |
dc.subject.keywordAuthor | Crystallization | - |
dc.subject.keywordAuthor | Kinetics | - |
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