Heterostructured Pd/PdO nanowires for selective and efficient CO_(2) electroreduction to CO

作     者：Tian-Jiao Wang Wen-Sheng Fang Yi-Ming Liu Fu-Min Li Pei Chen Yu Chen Tian-Jiao Wang;Wen-Sheng Fang;Yi-Ming Liu;Fu-Min Li;Pei Chen;Yu Chen

作者机构：Key Laboratory of Macromolecular Science of Shaanxi ProvinceKey Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education)Shaanxi Key Laboratory for Advanced Energy DevicesSchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710062ShaanxiChina School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第7期

页      面：407-413,I0011页

核心收录：

学科分类：081705[工学-工业催化] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(51873100) Natural Science Foundation of Shaanxi Province(2020JZ-23) the Fundamental Research Funds for the Central Universities(GK202101005 and 2021CBLZ004) the Innovation Team Project for Graduate Student at Shaanxi Normal University(TD2020048Y) the 111 Project(B14041) 

主　　题：Pd/PdO nanowires Heterostructure Carbon dioxide electrochemical reduction Carbon monoxide Faraday efficiency 

摘      要：Palladium(Pd) nanostructures are highly promising electrocatalysts for the carbon dioxide electrochemical reduction(CO_(2) ER). At present, it is still challenge for the synthesis of Pd nanostructures with high activity, selectivity and stability. In this work, a facile PdII-complex pyrolysis method is applied to synthesize the high-quality one-dimensional heterostructured Pd/Pd O nanowires(Pd/Pd O H-NWs).The as-prepared Pd/Pd O H-NWs have a large electrochemically active surface area, abundant defects and Pd/Pd O heterostructure. Electrochemical measurement results reveal that Pd/Pd O H-NWs exhibit up to 94% CO Faraday efficiency with a current density of 11.6 m A cm^(-2) at an applied potential of -0.8 V. Meanwhile, Pd/Pd O H-NWs can achieve a stable catalytic process of 12 h for CO_(2) ER. Such outstanding CO_(2) ER performance of Pd/Pd O H-NWs has also been verified in the flow cell test. The density functional theory calculations indicate that Pd/Pd O heterostructure can significantly weaken the CO adsorption on Pd sites, which improves the CO tolerance and consequently enhances the catalytic performance of Pd/Pd O H-NWs for CO_(2) ER. This work highlights a facile complex pyrolysis strategy for the synthesis of Pd-based CO_(2) ER catalysts and provides a new application instance of metal/metal oxide heterostructure in electrocatalysis.