Ordered mesoporous C/TiO2 composites as advanced sonocatalysts
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Qiu, Pengpeng | - |
dc.contributor.author | Li, Wei | - |
dc.contributor.author | Kang, Kyounglim | - |
dc.contributor.author | Park, Beomguk | - |
dc.contributor.author | Luo, Wei | - |
dc.contributor.author | Zhao, Dongyuan | - |
dc.contributor.author | Khim, Jeehyeong | - |
dc.date.accessioned | 2021-09-05T03:55:21Z | - |
dc.date.available | 2021-09-05T03:55:21Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-10-21 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/97063 | - |
dc.description.abstract | Ordered mesoporous C/TiO2 composites have been fabricated via an evaporation induced co-assembly method, and demonstrated as a highly efficient sonocatalyst. The effects of the carbon content in the composites and calcination temperature have been investigated thoroughly in this work and optimized for the production of well-defined mesoporous C/TiO2 materials. The resultant composites possess superior "brick-mortar" frameworks with uniform TiO2 nanocrystals glued by a carbon matrix, and exhibit highly ordered mesostructures with high surface area (similar to 200 m(2) g(-1)). More importantly, the mesoporous C/TiO2 composites show a high sonocatalytic degradation rate of Rhodamine B. The maximum pseudo-first-order reaction rate constant obtained with the composites 15C-85TiO(2)-450 (C: 15.2 wt%, TiO2: 84.8 wt%, calcined at 450 degrees C) is 0.178 min(-1), which is 2.7 and 4.8 times higher than that of P25 (0.062 min(-1)) and ultrasound (0.037 min(-1)) alone, respectively. The excellent sonocatalytic performance is a result of fast mass diffusion, enhanced nucleation rate and rapid surface hydroxyl radical oxidation. In addition, the recycling test shows that the sonocatalytic degradation rate with 15C-85TiO(2)-450 is retained even after five cycles, which is related to the well-retained mesostructure with superior mechanical stability. We believe that the present results provide important insights into the design and synthesis of advanced sonocatalysts. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | TITANIUM-DIOXIDE | - |
dc.subject | PHOTOCATALYTIC ACTIVITY | - |
dc.subject | ORGANIC-COMPOUNDS | - |
dc.subject | TIO2 | - |
dc.subject | DEGRADATION | - |
dc.subject | SONOLUMINESCENCE | - |
dc.subject | ENHANCEMENT | - |
dc.subject | PERFORMANCE | - |
dc.subject | IMPROVEMENT | - |
dc.subject | GENERATION | - |
dc.title | Ordered mesoporous C/TiO2 composites as advanced sonocatalysts | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Khim, Jeehyeong | - |
dc.identifier.doi | 10.1039/c4ta03455d | - |
dc.identifier.scopusid | 2-s2.0-84907789899 | - |
dc.identifier.wosid | 000342880200017 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.39, pp.16452 - 16458 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 2 | - |
dc.citation.number | 39 | - |
dc.citation.startPage | 16452 | - |
dc.citation.endPage | 16458 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | TITANIUM-DIOXIDE | - |
dc.subject.keywordPlus | PHOTOCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | ORGANIC-COMPOUNDS | - |
dc.subject.keywordPlus | TIO2 | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | SONOLUMINESCENCE | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | IMPROVEMENT | - |
dc.subject.keywordPlus | GENERATION | - |
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