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Site-Selective Deposition of a Cobalt Cocatalyst onto a Plasmonic Au/TiO2 Photoanode for Improved Water Oxidation
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| Title: | Site-Selective Deposition of a Cobalt Cocatalyst onto a Plasmonic Au/TiO2 Photoanode for Improved Water Oxidation |
| Authors: | Okazaki, Megumi Browse this author | | Suganami, Yoshiki Browse this author | | Hirayama, Naoki Browse this author | | Nakata, Hiroko Browse this author | | Oshikiri, Tomoya Browse this author →KAKEN DB | | Yokoi, Toshiyuki Browse this author | | Misawa, Hiroaki Browse this author →KAKEN DB | | Maeda, Kazuhiko Browse this author |
| Keywords: | artificial photosynthesis | | localized surface plasmon | | photocatalysis | | solar fuels | | water splitting |
| Issue Date: | 22-Jun-2020 |
| Publisher: | American Chemical Society |
| Journal Title: | ACS applied energy materials |
| Volume: | 3 |
| Issue: | 6 |
| Start Page: | 5142 |
| End Page: | 5146 |
| Publisher DOI: | 10.1021/acsaem.0c00857 |
| Abstract: | Plasmonic Au/TiO2 thin film works as a stable water oxidation photoanode. Here we show that site-selective deposition of nanosized CoOx as a water oxidation cocatalyst at the edge of Au nanoparticles on the TiO2 film improves the photoelectrochemical water oxidation activity. The nanosized CoOx was deposited by a photoassisted electrochemical method onto the Au/TiO2 thin film. The CoOx loading amount was controllable by changing the amount of electric charge that flowed during the deposition, which influenced the photoelectrochemical performance. Under visible light, the optimized CoOx/Au/TiO2 thin film generated stable photoanodic current, which was similar to 3 times higher than that obtained using Au/TiO2. |
| Rights: | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/79091 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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