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Solar-driven production of hydrogen and acetaldehyde from ethanol on Ni-Cu bimetallic catalysts with solar-to-fuels conversion efficiency up to 3.8 %
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| Title: | Solar-driven production of hydrogen and acetaldehyde from ethanol on Ni-Cu bimetallic catalysts with solar-to-fuels conversion efficiency up to 3.8 % |
| Authors: | Luo, Shunqin Browse this author | | Song, Hui Browse this author | | Philo, Davin Browse this author | | Oshikiri, Mitsutake Browse this author | | Kako, Tetsuya Browse this author →KAKEN DB | | Ye, Jinhua Browse this author →KAKEN DB |
| Keywords: | Solar-driven photocatalysis | | Ethanol dehydrogenation | | Ni-Cu bimetallic catalysts | | Solar-to-fuel conversion | | Hot electrons |
| Issue Date: | 5-Sep-2020 |
| Publisher: | Elsevier |
| Journal Title: | Applied Catalysis B-environmental |
| Volume: | 272 |
| Start Page: | 118965 |
| Publisher DOI: | 10.1016/j.apcatb.2020.118965 |
| Abstract: | Catalytic ethanol dehydrogenation is recognized as a promising approach to produce valuable chemical stocks, yet its industrialization suffers from high energy consumption. Here, we present an efficient solar-driven ethanol dehydrogenation process using a low-cost Ni-Cu bimetallic catalyst for the high-yield and selective production of H-2 and acetaldehyde. Under the irradiation of focused simulated solar light, 176.6 mmol g(catalyst)(-1) h(-1) of H-2 production rate with a high solar-to-fuel conversion efficiency (3.8 %) was achieved without additional thermal energy input, which is far more efficient than any previously reported photocatalytic ethanol dehydrogenation systems. Mechanistic investigations revealed that photothermal heating and hot carrier generation over Ni-Cu catalysts took responsibilities for the high activity. Hot electrons generated from Cu nanoparticles could migrate to Ni atoms, which simultaneously favored the separation of charge carriers and the activation of adsorbates. This study opens a promising pathway toward solar-energy conversion technology and advanced cost-effective industrial processes. |
| Rights: | © <2020>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/84750 |
| Appears in Collections: | 総合化学院 (Graduate School of Chemical Sciences and Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 葉 金花
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