DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hyoung-il Kim | - |
dc.contributor.author | Doohun Kim | - |
dc.contributor.author | Wooyul Kim | - |
dc.contributor.author | Yoon-Cheol Ha | - |
dc.contributor.author | Seong-Ju Sim | - |
dc.contributor.author | Sujeong Kim | - |
dc.contributor.author | Choi, W | - |
dc.date.accessioned | 2017-07-19T12:52:00Z | - |
dc.date.available | 2017-07-19T12:52:00Z | - |
dc.date.created | 2016-12-06 | - |
dc.date.issued | 2016-07-05 | - |
dc.identifier.issn | 0926-860X | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/36579 | - |
dc.description.abstract | We demonstrated the successful water treatment performance of a continuous-flow tubular TiO2 nanotube reactor made of Ti pipe where a TiO2 nanotube (TNT) layer was directly formed on the inner wall by an electrochemical anodization process. A cylindrical UV lamp was inserted into the pipe to irradiate the inner TNT surface as a light source. To optimize the thickness of TNT layer on Ti pipe, TNT layers with 1, 5 and 10 mu m thickness were prepared and their photocatalytic activities were tested for the degradation of various organic substrates (acid orange 7 (AO7), dichloroacetate (DCA), and 4-chlorophenol (4-CP)) under UV illumination. The TNT layer with 10 mu m thickness showed the highest photocatalytic activity, with first-order removal rate constants (k:min(-1)) of 0.019, 0.039, and 0.025 for AO7, 4-CP, and DCA, respectively. The directly formed TNTs (10 mu m thickness) on Ti pipes in the continuous-flow tubular TNT reactor, having a strong adhesiveness and a high surface area, enabled the successful degradation of organic compounds and to have kept the activity without decrease during the repeated cycles and long-term experiments. The photocatalytic performance of the tubular TNT reactor was tested with a higher concentration, smaller volume ([4-CP](0) = 100 mu M, solution vol. = 15 mL) and a lower concentration, larger volume ([4-CP](0) = 20 mu M, solution vol. = 100 mL) in the circulation-flow mode (20 mL min(-1)). A good performance was achieved under the low intensity UV illumination (approximate to 2 mW cm(-2)) with a half-life of ca. 50 min and ca. 11 h with 80% and 79% removal of TOC for the above two test conditions, respectively. The proposed tubular TNT reactor can be an effective option in the design of continuous flow-type photocatalytic reactors for practical water purification. (C) 2015 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.relation.isPartOf | Applied Catalysis A: General | - |
dc.title | Anodic TiO2 nanotube layer directly formed on the inner surface of Ti pipe for a tubular photocatalytic reactor | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/J.APCATA.2015.10.039 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Applied Catalysis A: General, v.521, pp.174 - 181 | - |
dc.identifier.wosid | 000379277900025 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 181 | - |
dc.citation.startPage | 174 | - |
dc.citation.title | Applied Catalysis A: General | - |
dc.citation.volume | 521 | - |
dc.contributor.affiliatedAuthor | Choi, W | - |
dc.identifier.scopusid | 2-s2.0-84973397847 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 3 | - |
dc.description.scptc | 0 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | DOPED TIO2 | - |
dc.subject.keywordPlus | VISIBLE-LIGHT | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | AU | - |
dc.subject.keywordAuthor | TiO2 nanotube | - |
dc.subject.keywordAuthor | Photocatalytic oxidation | - |
dc.subject.keywordAuthor | Photocatalytic water treatment | - |
dc.subject.keywordAuthor | Organic pollutant degradation | - |
dc.subject.keywordAuthor | Continuous photocatalytic reactor | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
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