Surface-hydrogenated CrMnOx coupled with GaN nanowires for light-driven bioethanol dehydration to ethylene

Zhouzhou Wang, Haotian Ye, Yixin Li, Bowen Sheng, Ping Wang, Pengfei Ou (), Xiao-Yan Li, Tianqi Yu, Zijian Huang, Jinglin Li, Ying Yu (), Xinqiang Wang (), Zhen Huang and Baowen Zhou ()
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Zhouzhou Wang: Shanghai Jiao Tong University
Haotian Ye: Peking University
Yixin Li: Shanghai Jiao Tong University
Bowen Sheng: Peking University
Ping Wang: Peking University
Pengfei Ou: National University of Singapore
Xiao-Yan Li: Northwestern University
Tianqi Yu: Shanghai Jiao Tong University
Zijian Huang: Shanghai Jiao Tong University
Jinglin Li: Shanghai Jiao Tong University
Ying Yu: Central China Normal University
Xinqiang Wang: Peking University
Zhen Huang: Shanghai Jiao Tong University
Baowen Zhou: Shanghai Jiao Tong University

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Light-driven bioethanol dehydration offers attractive outlooks for the sustainable production of ethylene. Herein, a surface-hydrogenated CrMnOx is coupled with GaN nanowires (GaN@CMO-H) for light-driven ethanol dehydration to ethylene. Through combined experimental and computational investigations, a surface hydrogen-replenishment mechanism is proposed to disclose the ethanol dehydration pathway over GaN@CMO-H. Moreover, the surface-hydrogenated GaN@CMO-H can significantly lower the reaction energy barrier of the C2H5OH-to-C2H4 conversion by switching the rate-determining reaction step compared to both GaN and GaN@CMO. Consequently, the surface-hydrogenated GaN@CMO-H illustrates a considerable ethylene production activity of 1.78 mol·gcat−1·h−1 with a high turnover number of 94,769 mole ethylene per mole CrMnOx. This work illustrates a new route for sustainable ethylene production with the only use of bioethanol and sunlight beyond fossil fuels.

Date: 2025
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DOI: 10.1038/s41467-025-56277-z

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