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DC Field | Value | Language |
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dc.citation.endPage | 423 | - |
dc.citation.startPage | 415 | - |
dc.citation.title | JOURNAL OF ENERGY CHEMISTRY | - |
dc.citation.volume | 65 | - |
dc.contributor.author | Dhandole, Love Kumar | - |
dc.contributor.author | Lee, Hyun Hwi | - |
dc.contributor.author | Cha, Weon-Sik | - |
dc.contributor.author | Jang, Jum Suk | - |
dc.contributor.author | Lee, Jae Sung | - |
dc.date.accessioned | 2023-12-21T14:40:09Z | - |
dc.date.available | 2023-12-21T14:40:09Z | - |
dc.date.created | 2021-08-31 | - |
dc.date.issued | 2022-02 | - |
dc.description.abstract | High-temperature thermal oxidation of an Fe foil produces a high-quality, crystalline hematite nanoflake suitable as a photoanode for the photoelectrochemical (PEC) water oxidation. Physical pre-polishing of the foil surface has a profound effect in the formation of a vertically-aligned nanoflakes of hematite phase with extended (110) planes by removing the loosely-bonded oxide layer. When the surface of the photoanode is modified with a ZrO2 passivation layer and a cobalt phosphate co-catalyst, the charge recombination at the photoanode-electrolyte interface is greatly suppressed to improve its overall PEC activity. As a result, the photocurrent density at 1.10 VRHE under 1 sun condition is enhanced from 0.22 mA cm(-2) for an unmodified photoanode to 0.59 mA cm(-2) for the fully modified photoanode, and the photocurrent onset potential is shifted cathodically by 400 mV. Moreover, the photoanode demonstrates outstanding stability by showing steady production of H-2 and O-2 gases in the stoichiometric ratio of 2:1 in a continuous PEC operation for 10 h. (C) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved. | - |
dc.identifier.bibliographicCitation | JOURNAL OF ENERGY CHEMISTRY, v.65, pp.415 - 423 | - |
dc.identifier.doi | 10.1016/j.jechem.2021.06.009 | - |
dc.identifier.issn | 2095-4956 | - |
dc.identifier.scopusid | 2-s2.0-85108267706 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54103 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S2095495621003508?via%3Dihub | - |
dc.identifier.wosid | 000701767100003 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER | - |
dc.title | Self-motivated, thermally oxidized hematite nanoflake photoanodes: Effects of pre-polishing and ZrO2 passivation layer | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, AppliedChemistry, PhysicalEnergy & FuelsEngineering, Chemical 9.676 Journal Impact Factor ™ (2020) | - |
dc.relation.journalResearchArea | ChemistryEnergy & FuelsEngineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.subject.keywordAuthor | Fe foilThermal oxidationNanoflakesPhotoelectrochemical water splittingSurface modifications | - |
dc.subject.keywordPlus | FEATURE SIZEWATER OXIDATIONFLAME SYNTHESISALPHA-FE2O3FILMSPERFORMANCEELECTRODESSTRATEGIESSPECTRAGROWTH | - |
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