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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
Type: article (author version)
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)

Submitter: 葉 金花

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