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DC Field | Value | Language |
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dc.citation.startPage | 108090 | - |
dc.citation.title | NANO ENERGY | - |
dc.citation.volume | 107 | - |
dc.contributor.author | Kang, Jihun | - |
dc.contributor.author | Yoon, Ki-Yong | - |
dc.contributor.author | Lee, Jae-Eun | - |
dc.contributor.author | Park, Juhyung | - |
dc.contributor.author | Chaule, Sourav | - |
dc.contributor.author | Jang, Ji-Hyun | - |
dc.date.accessioned | 2023-12-21T12:50:10Z | - |
dc.date.available | 2023-12-21T12:50:10Z | - |
dc.date.created | 2023-01-06 | - |
dc.date.issued | 2023-03 | - |
dc.description.abstract | Hematite (Fe2O3) has been widely used as a photoanode in photoelectrochemical water splitting (PEC) for green hydrogen production. Here, for the first time, we investigate how a simple in-situ phosphorus (P) doping strategy improves the overall PEC performance of hematite with a systematic analysis of the various effects on the PEC performance. By introducing enriched FePO4 regions on the Ti-doped FeOOH surface and subsequent high-temperature annealing via P-doping, meso-porous P,Ti co-doped Fe2O3 (P,Ti-Fe2O3) nanorods were fabricated. P,Ti-Fe2O3 exhibited four-fold and two-fold increased BET surface area and electrical active area, respectively, compared to that of Ti-Fe2O3. Benefiting from the nano-structuring and efficient P doping effects [e.g., increased carrier density (Nd=3.48168 ×1020 cm−3), enhanced charge separation (ηbulk= 38.7% and ηsurface= 79.1%), and steeper band bending (Wd=3.910 nm)], the resulting P,Ti-Fe2O3 photoanode exhibited 94% improved photocurrent density of 2.50 mA cm−2 compared to that of Ti-Fe2O3 (@ 1.23 VRHE) under 1 sun illumination. With the deposition of the NiFeOx cocatalyst, the NiFeOx/P,Ti-Fe2O3 photoanode exhibited excellent photocurrent density of 3.54 mA cm−2 (@ 1.23 VRHE) with a remarkable cathodic shift (180 mV) of the onset potential, marking the highest value among P doped hematite studies. This study suggests a new paradigm of P doped hematite with mesopores and gradient doping properties affordable in a cost-efficient way, achieving an excellent PEC water splitting performance. | - |
dc.identifier.bibliographicCitation | NANO ENERGY, v.107, pp.108090 | - |
dc.identifier.doi | 10.1016/j.nanoen.2022.108090 | - |
dc.identifier.issn | 2211-2855 | - |
dc.identifier.scopusid | 2-s2.0-85144828988 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/61123 | - |
dc.identifier.wosid | 000916659400001 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Meso-pore generating P doping for efficient photoelectrochemical water splitting | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical;Nanoscience & Nanotechnology;Materials Science, Multidisciplinary;Physics, Applied | - |
dc.relation.journalResearchArea | Chemistry;Science & Technology - Other Topics;Materials Science;Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Water splitting | - |
dc.subject.keywordAuthor | Non -metal doping | - |
dc.subject.keywordAuthor | Porous structure | - |
dc.subject.keywordPlus | HEMATITE | - |
dc.subject.keywordPlus | PHOTOANODES | - |
dc.subject.keywordPlus | PHOTOOXIDATION | - |
dc.subject.keywordPlus | NANORODS | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | SIZE | - |
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