Highly nanotextured beta-Bi2O3 pillars by electrostatic spray deposition as photoanodes for solar water splitting
DC Field | Value | Language |
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dc.contributor.author | Kim, Min-Woo | - |
dc.contributor.author | Joshi, Bhavana | - |
dc.contributor.author | Samuel, Edmund | - |
dc.contributor.author | Kim, Karam | - |
dc.contributor.author | Kim, Yong-Il | - |
dc.contributor.author | Kim, Tae-Gun | - |
dc.contributor.author | Swihart, Mark T. | - |
dc.contributor.author | Yoon, Sam S. | - |
dc.date.accessioned | 2021-09-02T05:15:20Z | - |
dc.date.available | 2021-09-02T05:15:20Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2018-10-05 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/72511 | - |
dc.description.abstract | We demonstrate fabrication of films of highly textured bismuth oxide (Bi2O3) pillars via electrostatic spray deposition and test the performance of these films as photoanodes in photoelectrochemical water splitting. The beta-Bi2O3 and alpha-Bi2O3 phases were identified and distinguished using X-ray diffraction, Raman spectroscopy, and transmission electron microscopy. The beta-Bi2O3 pillars of optimized thickness exhibited a photocurrent density of 0.97 mA.cm(-2) at 0.5 V vs Ag/AgCl. The tetragonal beta-Bi2O3 pillars had enhanced visible light absorbance compared to alpha-Bi2O3 as well as other metal oxides like ZnO and TiO2. Tauc plot analysis of film absorbance showed a decrease in the bandgap of the beta-Bi2O3 phase to 2.5 eV. In Na2SO3 electrolyte, a hole scavenger, the onset voltage for the beta-Bi2O3 phase was shifted to a more negative value (-0.4 V), which increased photocurrent density. The electron concentration reached its highest value of 9.1 x 10(20) cm(-3) for the film with the highest photocurrent density. (C) 2018 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | PHOTOCATALYTIC ACTIVITY | - |
dc.subject | EFFICIENT PHOTOANODES | - |
dc.subject | ELECTRONIC-STRUCTURE | - |
dc.subject | BI2O3 | - |
dc.subject | FILMS | - |
dc.subject | NANOPARTICLES | - |
dc.subject | OXYGEN | - |
dc.subject | HETEROJUNCTION | - |
dc.subject | PERFORMANCE | - |
dc.subject | FABRICATION | - |
dc.title | Highly nanotextured beta-Bi2O3 pillars by electrostatic spray deposition as photoanodes for solar water splitting | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yoon, Sam S. | - |
dc.identifier.doi | 10.1016/j.jallcom.2018.06.047 | - |
dc.identifier.scopusid | 2-s2.0-85048706184 | - |
dc.identifier.wosid | 000444058300106 | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.764, pp.881 - 889 | - |
dc.relation.isPartOf | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 764 | - |
dc.citation.startPage | 881 | - |
dc.citation.endPage | 889 | - |
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.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | PHOTOCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | EFFICIENT PHOTOANODES | - |
dc.subject.keywordPlus | ELECTRONIC-STRUCTURE | - |
dc.subject.keywordPlus | BI2O3 | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | HETEROJUNCTION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordAuthor | Tetragonal Bi2O3 | - |
dc.subject.keywordAuthor | Pillar morphology | - |
dc.subject.keywordAuthor | Electrostatic spray deposition | - |
dc.subject.keywordAuthor | Water splitting | - |
dc.subject.keywordAuthor | Photocurrent | - |
dc.subject.keywordAuthor | Mott-Schottky analysis | - |
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