DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Jung, Hee-Tae | - |
dc.contributor.advisor | 정희태 | - |
dc.contributor.author | Kim, Chansol | - |
dc.date.accessioned | 2021-05-12T19:32:10Z | - |
dc.date.available | 2021-05-12T19:32:10Z | - |
dc.date.issued | 2018 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=888317&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/283758 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2018.2,[iii, 37 p. :] | - |
dc.description.abstract | In this work, we significantly enhanced photocatalytic $CO_2$ conversion activity of $Cu_2O$ by constructing Z-scheme charge flow through hybridization of $Cu_2O$ with 3-dimensional nanowire arrays (NWAs) and $BiVO_4$. The BVO/C/$Cu_2O$ photocatalyst showed significantly enhanced charge separation and light harvesting properties, which result in 9.4 times and 4.7 times higher CO formation rate than those of $Cu_2O$ mesh and $Cu_2O$ NWAs under visible light irradiation. Coumarin probe molecule photoluminescence experimental result verifies that such enhancement was due to Z-scheme charge transfer mechanism that is photo-induced electron flow from conduction band of $BiVO_4$ to valence band of $Cu_2O$ via conductive carbon. In addition, our catalyst retained 98 % of initial photocatalytic $CO_2$ conversion performance after 5 reaction cycles (20 h) due to prevention of self-oxidation of $Cu_2O$ by protective carbon layer and z-schematic charge flow. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | CO2▼aCu2O nanowire arrays▼aphotocatalysts▼aZ-scheme | - |
dc.subject | 이산화탄소▼a산화구리 나노와이어 어레이▼a광촉매▼a제트 스킴 | - |
dc.title | Efficient photocatalytic carbon dioxide conversion by 3-dimensional structured Z-scheme photocatalyst | - |
dc.title.alternative | 3차원 구조의 제트 스킴 광촉매를 통한 효율적인 이산화탄소 광전환에 관한 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :생명화학공학과, | - |
dc.contributor.alternativeauthor | 김찬솔 | - |
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