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; Haifeng Xiong

doi:10.1038/s41467-022-33757-0

Layered Pd oxide on PdSn nanowires for boosting direct H₂O₂ synthesis

Nat Commun. 2022 Oct 14;13(1):6072. doi: 10.1038/s41467-022-33757-0.

Authors

Hong-Chao Li^#^{1

2}, Qiang Wan^#³, Congcong Du^{1

2}, Jiafei Zhao^{1

2}, Fumin Li^{1

2}, Ying Zhang^{1

2}, Yanping Zheng¹, Mingshu Chen¹, Kelvin H L Zhang^{1

2}, Jianyu Huang⁴, Gang Fu^{1

2}, Sen Lin⁵, Xiaoqing Huang^{6

7}, Haifeng Xiong^{8

9}

Affiliations

¹ The State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen, 361005, China.
² Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), 4221 Xiangan South Road, Xiamen, 361102, P. R. China.
³ State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China.
⁴ Clean Nano Energy Center, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China.
⁵ State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China. slin@fzu.edu.cn.
⁶ The State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen, 361005, China. hxq006@xmu.edu.cn.
⁷ Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), 4221 Xiangan South Road, Xiamen, 361102, P. R. China. hxq006@xmu.edu.cn.
⁸ The State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen, 361005, China. haifengxiong@xmu.edu.cn.
⁹ Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), 4221 Xiangan South Road, Xiamen, 361102, P. R. China. haifengxiong@xmu.edu.cn.

^# Contributed equally.

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 (Pd_L/PdSn-NW). The Pd_L/PdSn-NW displays superior reactivity in the DHS at zero Celcius, presenting the H₂O₂ producibility of 528 mol kg_cat^-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 Pd_L/PdSn-NW. Furthermore, the weak adsorption of H₂O₂ on the Pd_L/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.

Grants and funding

22072118/National Natural Science Foundation of China (National Science Foundation of China)