Enhanced Photoelectrochemical Water Splitting of Micro-Arc Oxidized TiO2 via Anatase/Rutile Phase Control and Nitrogen Doping
DC Field | Value | Language |
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dc.contributor.author | Woo, Sung-Ran | - |
dc.contributor.author | Sung, Yun-Mo | - |
dc.date.accessioned | 2021-09-04T05:03:53Z | - |
dc.date.available | 2021-09-04T05:03:53Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 0013-4651 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/90171 | - |
dc.description.abstract | Titania and nitrogen-doped titania (TiO2) films were successfully prepared via micro-arc oxidation (MAO) of pure Ti plates. The films showed micro-porosity and high crystallinity with similar to 10-20 nm nanocrystals of anatase or anatase/rutile. Through the variation of applied voltage and time for MAO processing the phase composition ratio of rutile-to-anatase could be controlled from 5: 95 to 19:81. Nitrogen doping into titania was conducted by adding acetamide in an NaOH electrolyte solution during MAO and the nitrogen concentration was determined to be similar to 1 +/- 0.23% by X-ray photoelectron spectroscopy. UV/visible spectroscopy revealed the apparent redshift in nitrogen-doped samples, which evidences the nitrogen doping in TiO2 lattices. Also, both pure and nitrogen-doped samples showed the gradual redshift according to rutile content. Nitrogen-doped 81% anatase-19% rutile samples showed the highest photocurrent density and photoconversion efficiency of 0.594 mA/cm(2) and 0.6685%, respectively at 0 voltage, while pure and 100% anatase TiO2 samples showed the lowest ones of 0.036 mA/cm(2) and 0.0327%, respectively at 0 voltage. Photocurrent density could be further increased up to 0.8 mA/cm(2) using a mixed electrolyte of NaOH and KI. (C) 2016 The Electrochemical Society. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELECTROCHEMICAL SOC INC | - |
dc.subject | VISIBLE-LIGHT IRRADIATION | - |
dc.subject | DOPED TITANIUM-DIOXIDE | - |
dc.subject | HYDROGEN-PRODUCTION | - |
dc.subject | PHOTOCATALYTIC ACTIVITY | - |
dc.subject | ELECTROCHEMICAL PROPERTIES | - |
dc.subject | NANOCRYSTALLINE TIO2 | - |
dc.subject | ELECTRONIC-STRUCTURE | - |
dc.subject | NANOWIRE ARRAYS | - |
dc.subject | OXIDATION | - |
dc.subject | NANOTUBES | - |
dc.title | Enhanced Photoelectrochemical Water Splitting of Micro-Arc Oxidized TiO2 via Anatase/Rutile Phase Control and Nitrogen Doping | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Sung, Yun-Mo | - |
dc.identifier.doi | 10.1149/2.0471605jes | - |
dc.identifier.scopusid | 2-s2.0-85021361517 | - |
dc.identifier.wosid | 000370866700106 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.163, no.5, pp.H278 - H285 | - |
dc.relation.isPartOf | JOURNAL OF THE ELECTROCHEMICAL SOCIETY | - |
dc.citation.title | JOURNAL OF THE ELECTROCHEMICAL SOCIETY | - |
dc.citation.volume | 163 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | H278 | - |
dc.citation.endPage | H285 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.subject.keywordPlus | VISIBLE-LIGHT IRRADIATION | - |
dc.subject.keywordPlus | DOPED TITANIUM-DIOXIDE | - |
dc.subject.keywordPlus | HYDROGEN-PRODUCTION | - |
dc.subject.keywordPlus | PHOTOCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | NANOCRYSTALLINE TIO2 | - |
dc.subject.keywordPlus | ELECTRONIC-STRUCTURE | - |
dc.subject.keywordPlus | NANOWIRE ARRAYS | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | NANOTUBES | - |
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