DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Keon-Han | ko |
dc.contributor.author | Kim, Se-Jun | ko |
dc.contributor.author | Choi, Won Ho | ko |
dc.contributor.author | Lee, Heebin | ko |
dc.contributor.author | Moon, Byeong Cheul | ko |
dc.contributor.author | Kim, Gi Hwan | ko |
dc.contributor.author | Choi, Jae Won | ko |
dc.contributor.author | Park, Dong Gyu | ko |
dc.contributor.author | Choi, Jong Hui | ko |
dc.contributor.author | Kim, Hyungjun | ko |
dc.contributor.author | Kang, Jeung Ku | ko |
dc.date.accessioned | 2022-05-18T02:00:29Z | - |
dc.date.available | 2022-05-18T02:00:29Z | - |
dc.date.created | 2022-03-10 | - |
dc.date.created | 2022-03-10 | - |
dc.date.issued | 2022-05 | - |
dc.identifier.citation | ADVANCED ENERGY MATERIALS, v.12, no.18 | - |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.uri | http://hdl.handle.net/10203/296576 | - |
dc.description.abstract | The search for photocatalysts allowing the highly active, selective, and stable conversion of molecular oxygen into hydrogen peroxide is of worldwide interest. Here, the authors report the efficient conversion of O-2 into H2O2 with approximate to 100% selectivity and stable cycle stability by a triphasic metal oxide photocatalyst with a cobalt hydroxide carbonate nanosheet phase for water oxidation as well as iron oxide and titanium oxide phases of a core-shell morphology for charge transfer and oxygen reduction, denoted as CFT. The different surface energies of 0.78 (anatase) and 0.93 J m(-2) (rutile) for titanium oxide and 1.39 J m(-2) for iron oxide result in a core-shell morphology. The band gaps for iron oxide (2.02 eV), titanium oxide (approximate to 3 eV), and cobalt hydroxide carbonate (3.80 eV) sites reveal that the CFT photocatalyst allows visible-to-UV light absorption. The O-18(2) isotope-labeling experiments prove that the core-shell structure promotes hole transfer toward the water oxidation site. Additionally, the hole-induced H2O2 decomposition at the oxygen reduction site is efficiently hindered. Moreover, the photogenerated electrons transfer toward the oxygen reduction site to produce H2O2 from O-2 with approximate to 10-fold higher activity than those by conventional single- or dual-phase photocatalysts, while giving robust cycle stability. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Triphasic Metal Oxide Photocatalyst for Reaction Site-Specific Production of Hydrogen Peroxide from Oxygen Reduction and Water Oxidation | - |
dc.type | Article | - |
dc.identifier.wosid | 000760881500001 | - |
dc.identifier.scopusid | 2-s2.0-85125268917 | - |
dc.type.rims | ART | - |
dc.citation.volume | 12 | - |
dc.citation.issue | 18 | - |
dc.citation.publicationname | ADVANCED ENERGY MATERIALS | - |
dc.identifier.doi | 10.1002/aenm.202104052 | - |
dc.contributor.localauthor | Kim, Hyungjun | - |
dc.contributor.localauthor | Kang, Jeung Ku | - |
dc.contributor.nonIdAuthor | Moon, Byeong Cheul | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | charge transfer | - |
dc.subject.keywordAuthor | DFT simulations | - |
dc.subject.keywordAuthor | H | - |
dc.subject.keywordAuthor | O-2 | - |
dc.subject.keywordAuthor | (2) production | - |
dc.subject.keywordAuthor | in-situ experimental analysis | - |
dc.subject.keywordAuthor | oxygen reduction | - |
dc.subject.keywordAuthor | triphasic metal-oxide photocatalysts | - |
dc.subject.keywordAuthor | water oxidation | - |
dc.subject.keywordPlus | GRAPHITIC CARBON NITRIDE | - |
dc.subject.keywordPlus | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | H2O2 | - |
dc.subject.keywordPlus | DRIVEN | - |
dc.subject.keywordPlus | GENERATION | - |
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