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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 20003 | - |
dc.citation.number | 47 | - |
dc.citation.startPage | 19999 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 2 | - |
dc.contributor.author | Ahn, Hyo-Jin | - |
dc.contributor.author | Kwak, Myung-Jun | - |
dc.contributor.author | Lee, Jung-Soo | - |
dc.contributor.author | Yoon, Ki-Yong | - |
dc.contributor.author | Jang, Ji-Hyun | - |
dc.date.accessioned | 2023-12-22T02:08:58Z | - |
dc.date.available | 2023-12-22T02:08:58Z | - |
dc.date.created | 2014-12-24 | - |
dc.date.issued | 2014-10 | - |
dc.description.abstract | In this report, we show that by creating a nanoporous haematite (alpha-Fe2O3) structure using boric acid (H3BO3) treatment, the chronic issue of the short diffusion length of carriers in alpha-Fe2O3 for photo-electrochemical (PEC) applications can be successfully addressed. The slow release of Fe3+ ions because of the presence of H3BO3 leads to the creation of smaller dimension FeOOH nanorods, creating nanoporous alpha-Fe2O3 nanorods, composed of similar to 15 nm alpha-Fe2O3 domains. The nanoporous alpha-Fe2O3 suppresses recombination by providing the facile extraction of holes from the surface of favorably sized alpha-Fe2O3 domains. The optimized nanoporous sample showed a photocurrent density of 1.41 mA cm(-2) at a reversible hydrogen electrode of 1.23 V, which is 1.7 times higher than that of pristine hematite. The electro-chemical impedance spectroscopy and incident photon-to-current efficiency data, and Mott-Schottky plots confirmed the superior performance of the nanoporous samples. Our impressive results may pave the way for designing devices for advanced energy conversion applications as well as fabricating a high efficiency hematite-based PEC system. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.47, pp.19999 - 20003 | - |
dc.identifier.doi | 10.1039/c4ta04890c | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-84910124858 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/9624 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2014/TA/C4TA04890C#!divAbstract | - |
dc.identifier.wosid | 000345066900008 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY | - |
dc.title | Nanoporous hematite structures to overcome short diffusion lengths in water splitting | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ALPHA-FE2O3 | - |
dc.subject.keywordPlus | PHOTOANODES | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | ACTIVATION | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordPlus | PHOTOELECTROCHEMICAL CELLS | - |
dc.subject.keywordPlus | HYDROGEN-PRODUCTION | - |
dc.subject.keywordPlus | THIN-FILMS | - |
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