Mesoporous TiO2 encapsulating a visible-light responsive upconversion agent for enhanced sonocatalytic degradation of bisphenol-A
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Qiu, Pengpeng | - |
dc.contributor.author | Thokchom, Binota | - |
dc.contributor.author | Choi, Jongbok | - |
dc.contributor.author | Cui, Mingcan | - |
dc.contributor.author | Kim, Hong-Dae | - |
dc.contributor.author | Han, Zhengchang | - |
dc.contributor.author | Kim, Dukmin | - |
dc.contributor.author | Khim, Jeehyeong | - |
dc.date.accessioned | 2021-09-04T05:19:43Z | - |
dc.date.available | 2021-09-04T05:19:43Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/90295 | - |
dc.description.abstract | Herein, we report the integration of a visible-light active upconversion agent (Er: Y2O3) with mesoporous TiO2 via a modified two-step sol-gel coating method. The resultant material possesses a well-defined core-shell structure with a good upconversion property and exhibits uniform worm-like mesopores (similar to 3.8 nm), a high BET surface area (similar to 151.5 m(2) g(-1)) and a large pore volume (similar to 0.23 cm(3) g(-1)). The composite was demonstrated as an advanced sonocatalyst, showing a superior degradation performance for bisphenol-A (BPA). The effect of the erbium dopant content on the upconversion property and sonocatalytic performance was evaluated for the production of the best sonocatalyst. We found that the maximum pseudo first-order reaction rate constant in the presence of the composite with an Er3+ content of 3 wt% in Y2O3 nanocrystals is calculated to be 0.155 min(-1), which is 2.9 and 2 times larger than that of US alone (0.054 min(-1)) and hollow structured mesoporous TiO2 (0.077 min(-1)), respectively. More importantly, the degradation rate is much higher than that of the sonocatalysts reported previously for treatment of BPA (0.09-0.14 min(-1)). The superior catalytic activity can be attributed to an intensified cavitation reaction zone and an enhanced amount of photo-generated charges. Moreover, the recycling test shows that a constant catalytic activity is retained even after 4 cycles. This study paves a promising way for the development of a multi-functional catalyst for sonochemical processes. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | CORE-SHELL NANOPARTICLES | - |
dc.subject | SONOCHEMICAL DEGRADATION | - |
dc.subject | CAVITATION INCEPTION | - |
dc.subject | HYBRID FILMS | - |
dc.subject | ORGANIC-DYES | - |
dc.subject | SONOLUMINESCENCE | - |
dc.subject | PHOTOCATALYST | - |
dc.subject | LUMINESCENCE | - |
dc.subject | IMPROVEMENT | - |
dc.subject | ULTRASOUND | - |
dc.title | Mesoporous TiO2 encapsulating a visible-light responsive upconversion agent for enhanced sonocatalytic degradation of bisphenol-A | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choi, Jongbok | - |
dc.contributor.affiliatedAuthor | Khim, Jeehyeong | - |
dc.identifier.doi | 10.1039/c6ra01689h | - |
dc.identifier.scopusid | 2-s2.0-84966397436 | - |
dc.identifier.wosid | 000374495400013 | - |
dc.identifier.bibliographicCitation | RSC ADVANCES, v.6, no.44, pp.37434 - 37442 | - |
dc.relation.isPartOf | RSC ADVANCES | - |
dc.citation.title | RSC ADVANCES | - |
dc.citation.volume | 6 | - |
dc.citation.number | 44 | - |
dc.citation.startPage | 37434 | - |
dc.citation.endPage | 37442 | - |
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.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.subject.keywordPlus | CORE-SHELL NANOPARTICLES | - |
dc.subject.keywordPlus | SONOCHEMICAL DEGRADATION | - |
dc.subject.keywordPlus | CAVITATION INCEPTION | - |
dc.subject.keywordPlus | HYBRID FILMS | - |
dc.subject.keywordPlus | ORGANIC-DYES | - |
dc.subject.keywordPlus | SONOLUMINESCENCE | - |
dc.subject.keywordPlus | PHOTOCATALYST | - |
dc.subject.keywordPlus | LUMINESCENCE | - |
dc.subject.keywordPlus | IMPROVEMENT | - |
dc.subject.keywordPlus | ULTRASOUND | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.