Layered Pd oxide on PdSn nanowires for boosting direct H2O2 synthesis

Hong-chao Li, Qiang Wan, Congcong Du, Jiafei Zhao, Fumin Li, Ying Zhang, Yanping Zheng, Mingshu Chen, Kelvin H. L. Zhang, Jianyu Huang, Gang Fu, Sen Lin (), Xiaoqing Huang () and Haifeng Xiong ()
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Hong-chao Li: Xiamen University
Qiang Wan: Fuzhou University
Congcong Du: Xiamen University
Jiafei Zhao: Xiamen University
Fumin Li: Xiamen University
Ying Zhang: Xiamen University
Yanping Zheng: Xiamen University
Mingshu Chen: Xiamen University
Kelvin H. L. Zhang: Xiamen University
Jianyu Huang: Yanshan University
Gang Fu: Xiamen University
Sen Lin: Fuzhou University
Xiaoqing Huang: Xiamen University
Haifeng Xiong: Xiamen University

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Hydrogen peroxide (H2O2) has the wide range of applications in industry and living life. However, the development of the efficient heterogeneous catalyst in the direct H2O2 synthesis (DHS) from H2 and O2 remains a formidable challenge because of the low H2O2 producibility. Herein, we develop a two-step approach to prepare PdSn nanowire catalysts, which comprises Pd oxide layered on PdSn nanowires (PdL/PdSn-NW). The PdL/PdSn-NW displays superior reactivity in the DHS at zero Celcius, presenting the H2O2 producibility of 528 mol kgcat−1·h−1 and H2O2 selectivity of >95%. A layer of Pd oxide on the PdSn nanowire generates bi-coordinated Pd, leading to the different adsorption behaviors of O2, H2 and H2O2 on the PdL/PdSn-NW. Furthermore, the weak adsorption of H2O2 on the PdL/PdSn-NW contributes to the low activation energy and high H2O2 producibility. This surface engineering approach, depositing metal layer on metal nanowires, provides a new insight in the rational designing of efficient catalyst for DHS.

Date: 2022
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DOI: 10.1038/s41467-022-33757-0

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