文献类型：期刊文献

英文题名：Bifunctional effect of Bi(OH)3 on the PdBi surface as interfacial Br?nsted base enables ethanol electro-oxidization

作者：Huang, Jialu[1]; Deng, Chengwei[3]; Liu, Yue[2]; Han, Tingting[3]; Ji, Feng[3]; Zhang, Yuehua[1]; Lu, Hongbin[1]; Hua, Ping[1]; Zhang, Bowei[4]; Qian, Tao[1]; Yuan, Xiaolei[1]; Yang, Yaoyue[2]; Yao, Yong[1]

机构：[1] School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China; [2] Key Laboratory of General Chemistry of National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China; [3] State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, Shanghai, 200245, China; [4] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2022

卷号：611

起止页码：327

外文期刊名：Journal of Colloid and Interface Science

收录：EI(收录号：20215211400774)

语种：英文

外文关键词：Electrocatalysis - Nanostructures - Catalytic oxidation - Electrocatalysts - Surface structure - Ethanol

摘要：Palladium (Pd) is supposed to be one of the most promising catalytic metals towards ethanol (C2H5OH) oxidation reaction (EOR). However, Pd electrocatalysts easily suffer from the poisoning of the intermediates (especially CO), resulting in the quick decay of EOR catalysis. Herein, inspired by the Br?nsted-Lowry acid-base theory, a "attraction–repulsion" concept is proposed to guide the surface structure engineering toward EOR catalysts. Specifically, we induce Bi(OH)3 species as Br?nsted base onto PdBi nanoplates to effectively repel the adsorption of CO intermediates. The PdBi-Bi(OH)3 nanoplates show an impressive mass activity of 4.46 A mgPd-1 during the EOR catalysis and keep excellent stability. Both the stability and enhanced performance are attributed by the interfacial Br?nsted base Bi(OH)3 which can selectively attract and repel reactants and intermediates, as evidenced from in situ measurements and theoretical views. ? 2021 Elsevier Inc.