(0 2 0)-Textured tungsten trioxide nanostructure with enhanced photoelectrochemical activity
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Hyun Soo | - |
dc.contributor.author | Park, Woosung | - |
dc.contributor.author | Hwang, Sung Won | - |
dc.contributor.author | Kim, Hyunkyu | - |
dc.contributor.author | Sim, Yelyn | - |
dc.contributor.author | Surendran, Subramani | - |
dc.contributor.author | Sim, Uk | - |
dc.contributor.author | Cho, In Sun | - |
dc.date.accessioned | 2022-04-19T09:30:06Z | - |
dc.date.available | 2022-04-19T09:30:06Z | - |
dc.date.issued | 2020-09 | - |
dc.identifier.issn | 0021-9517 | - |
dc.identifier.issn | 1090-2694 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/146870 | - |
dc.description.abstract | Texturing, i.e., preferentially oriented deposition of a film with a specific crystallographic direction, enables the manipulation of the charge transport properties and surface reactivity of photoelectrodes for solar water-splitting. The advancement of solar water-splitting systems under neutral conditions is a vital strategy to reduce the economic and ecological traits of the prevailing strong acid or alkaline-based solar water-splitting systems. However, the photoelectrodes have to endure cumulative barriers in neutral media to convalesce the performance of the neutral solar water-splitting system. The implication of texturing in materials enforces the synergistic effect that is essential to confine the barriers to improve the performance of the photoelectrodes in eco-friendly neutral pH conditions. Here, we synthesized tungsten trioxide (WO3) films to achieve a columnar-type nanostructure with (0 2 0) texture, through a laser ablation deposition. Specifically, we modulated both deposition temperature and working pressure, enabling the (0 2 0) textured deposition of films, as well as the fine-tuning of the surface morphology. With optimized fabrication conditions, the (0 2 0)-textured WO3 film (thickness: 3.6 mu m) showed improved photoelectrochemical water-oxidation performance, and the photocurrent density was similar to 3 mA/cm(2) at 1.23 V versus reversible hydrogen electrode in an economic and ecological neutral condition. The WO3 films were further characterized using various methods, namely a UV-Vis spectroscopy, X-ray photoelectron spectroscopy (XPS), and Hall Effect measurements. Based on the measured film characteristics, we attributed enhanced charge transport and transfer characteristics to the (0 2 0)-texturing, and the formation of the optimal amount of oxygen vacancies. (C) 2020 Elsevier Inc. All rights reserved. | - |
dc.format.extent | 9 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE | - |
dc.title | (0 2 0)-Textured tungsten trioxide nanostructure with enhanced photoelectrochemical activity | - |
dc.type | Article | - |
dc.publisher.location | United States | - |
dc.identifier.doi | 10.1016/j.jcat.2020.06.012 | - |
dc.identifier.scopusid | 2-s2.0-85087005072 | - |
dc.identifier.wosid | 000566793000003 | - |
dc.identifier.bibliographicCitation | JOURNAL OF CATALYSIS, v.389, pp 328 - 336 | - |
dc.citation.title | JOURNAL OF CATALYSIS | - |
dc.citation.volume | 389 | - |
dc.citation.startPage | 328 | - |
dc.citation.endPage | 336 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | NANOPOROUS WO3 PHOTOANODE | - |
dc.subject.keywordPlus | WATER OXIDATION | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | ARTIFICIAL PHOTOSYNTHESIS | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | HYDROGEN | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | DEPOSITION | - |
dc.subject.keywordAuthor | WO3 | - |
dc.subject.keywordAuthor | (020)-texture | - |
dc.subject.keywordAuthor | Nanostructure | - |
dc.subject.keywordAuthor | Laser ablation deposition | - |
dc.subject.keywordAuthor | Photoelectrochemical water-splitting | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/abs/pii/S0021951720302426?via%3Dihub | - |
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