DC Field | Value | Language |
---|---|---|
dc.contributor.author | Nguyen Duc Quang | ko |
dc.contributor.author | Phuoc Cao Van | ko |
dc.contributor.author | Duc Duy Le | ko |
dc.contributor.author | Majumder, Sutripto | ko |
dc.contributor.author | Nguyen Duc Chinh | ko |
dc.contributor.author | Jeong, Jong-Ryul | ko |
dc.contributor.author | Kim, Chunjoong | ko |
dc.contributor.author | Kim, Dojin | ko |
dc.date.accessioned | 2021-06-07T07:50:09Z | - |
dc.date.available | 2021-06-07T07:50:09Z | - |
dc.date.created | 2021-06-07 | - |
dc.date.created | 2021-06-07 | - |
dc.date.issued | 2021-08 | - |
dc.identifier.citation | APPLIED SURFACE SCIENCE, v.558 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | http://hdl.handle.net/10203/285559 | - |
dc.description.abstract | Severe charge recombination and sluggish water oxidation reaction (OER) kinetics significantly limit the practical application of hematite in photoelectrochemical (PEC) water-splitting devices. In this study, fluorine-surface-modified tin-doped hematite (F/Sn:Fe2O3) photoelectrodes have been fabricated by a hydrothermal method incorporated impregnation annealing process. The grown FeOOH nanorods coated with NH4F solution are annealed first at 550 degrees C in the vacuum to modify the hematite surface and then at 750 degrees C in argon to promote the diffusion of tin atoms from the fluorine-doped tin oxide (FTO) glass substrate to the hematite structure. The synergistic effect of F-modification and Sn-doping on Fe2O3 electrode considerably enhances its PEC water oxidation performance, resulting in the highest photocurrent density of 3.64 mA cm(-2) at 1.23 V vs. reversible hydrogen electrode (RHE) under AM 1.5 G illumination. Both effects increase the carrier concentration in the photoelectrode, which improves its transport efficiency. Moreover, the surface-localized F species promote the OER process on the electrode surface and improve the charge separation at the electrode/electrolyte interface by increasing its hole supply rate under the increased electric field. This work may open a new avenue for fabricating novel photoelectrodes with high PEC water splitting efficiency. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Fluorine-surface-modified tin-doped hematite nanorod array photoelectrodes with enhanced water oxidation activity | - |
dc.type | Article | - |
dc.identifier.wosid | 000652631800006 | - |
dc.identifier.scopusid | 2-s2.0-85105090252 | - |
dc.type.rims | ART | - |
dc.citation.volume | 558 | - |
dc.citation.publicationname | APPLIED SURFACE SCIENCE | - |
dc.identifier.doi | 10.1016/j.apsusc.2021.149898 | - |
dc.contributor.localauthor | Duc Duy Le | - |
dc.contributor.nonIdAuthor | Nguyen Duc Quang | - |
dc.contributor.nonIdAuthor | Phuoc Cao Van | - |
dc.contributor.nonIdAuthor | Majumder, Sutripto | - |
dc.contributor.nonIdAuthor | Nguyen Duc Chinh | - |
dc.contributor.nonIdAuthor | Jeong, Jong-Ryul | - |
dc.contributor.nonIdAuthor | Kim, Chunjoong | - |
dc.contributor.nonIdAuthor | Kim, Dojin | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | F-surface-modification | - |
dc.subject.keywordAuthor | Sn-doping | - |
dc.subject.keywordAuthor | Fe2O3 nanorods | - |
dc.subject.keywordAuthor | Photoelectrochemical | - |
dc.subject.keywordAuthor | Water splitting | - |
dc.subject.keywordPlus | CHARGE SEPARATION | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | PHOTOANODES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | PHOSPHATE | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | OXIDE | - |
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