文献类型：期刊文献

英文题名：Partially Oxidized Palladium Nanodots for Enhanced Electrocatalytic Carbon Dioxide Reduction

作者：Lu, Hui[1];Zhang, Le[2];Zhong, Ju Hua[1];Yang, Hua Gui[2]

机构：[1]East China Univ Sci & Technol, Dept Phys, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：13

期号：19

起止页码：2800

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20183605767754);WOS:【SCI-EXPANDED(收录号:WOS:000446428900008)】；

基金：This work was financially supported by National Natural Science Foundation of China (21573068), National Natural Science Funds for Distinguished Young Scholar (51725201) and Fundamental Research Funds for the Central Universities (222201718002).

语种：英文

外文关键词：carbon dioxide; carbon monoxide Faradaic efficiency; nanostructures; partially oxidized palladium; reduction; stabilized CO2 center dot- intermediate

摘要：Here we report a partially oxidized palladium nanodot (Pd/PdOx) catalyst with a diameter of around 4.5nm. In aqueous CO2-saturated 0.5m KHCO3, the catalyst displays a Faradaic efficiency (FE) of 90% at -0.55V vs. reversible hydrogen electrode (RHE) for carbon monoxide (CO) production, and the activity can be retained for at least 24h. The improved catalytic activity can be attributed to the strong adsorption of CO2 center dot- intermediate on the Pd/PdOx electrode, wherein the presence of Pd2+ during the electroreduction reaction of CO2 may play an important role in accelerating the carbon dioxide reduction reaction (CO2RR). This study explores the catalytic mechanism of a partially oxidized nanostructured Pd electrocatalyst and provides new opportunities for improving the CO2RR performance of metal systems.