Atomic overlayer of permeable microporous cuprous oxide on palladium promotes hydrogenation catalysis

Kunlong Liu, Lizhi Jiang, Wugen Huang, Guozhen Zhu, Yue-Jiao Zhang, Chaofa Xu, Ruixuan Qin, Pengxin Liu, Chengyi Hu, Jingjuan Wang, Jian-Feng Li, Fan Yang (), Gang Fu () and Nanfeng Zheng ()
Additional contact information
Kunlong Liu: Xiamen University
Lizhi Jiang: Xiamen University
Wugen Huang: Chinese Academy of Sciences
Guozhen Zhu: University of Manitoba
Yue-Jiao Zhang: Xiamen University
Chaofa Xu: Xiamen University
Ruixuan Qin: Xiamen University
Pengxin Liu: Xiamen University
Chengyi Hu: Xiamen University
Jingjuan Wang: Xiamen University
Jian-Feng Li: Xiamen University
Fan Yang: Chinese Academy of Sciences
Gang Fu: Xiamen University
Nanfeng Zheng: Xiamen University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract The interfacial sites of metal-support interface have been considered to be limited to the atomic region of metal/support perimeter, despite their high importance in catalysis. By using single-crystal surface and nanocrystal as model catalysts, we now demonstrate that the overgrowth of atomic-thick Cu2O on metal readily creates a two-dimensional (2D) microporous interface with Pd to enhance the hydrogenation catalysis. With the hydrogenation confined within the 2D Cu2O/Pd interface, the catalyst exhibits outstanding activity and selectivity in the semi-hydrogenation of alkynes. Alloying Cu(0) with Pd under the overlayer is the major contributor to the enhanced activity due to the electronic modulation to weaken the H adsorption. Moreover, the boundary or defective sites on the Cu2O overlayer can be passivated by terminal alkynes, reinforcing the chemical stability of Cu2O and thus the catalytic stability toward hydrogenation. The deep understanding allows us to extend the interfacial sites far beyond the metal/support perimeter and provide new vectors for catalyst optimization through 2D interface interaction.

Date: 2022
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DOI: 10.1038/s41467-022-30327-2

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