文献类型：期刊文献

英文题名：In situ reconstruction of Au promoted CuOOH/NiOOH for efficient and selective ethylene glycol electrooxidation

作者：Jiang, Wenhan[1,3];Zhu, Chen[2];Xu, Hao Guan[2];Liu, Ji Kai[2];Wu, Yi Xiao[2];Cao, Shiyu[1];Yuan, Hai Yang[2];Liu, Peng Fei[2];Zhou, Yi[1,3,4]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, State Environm Protect Key Lab Environm Risk Asses, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2025

卷号：515

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20252018444184);WOS:【SCI-EXPANDED(收录号:WOS:001502053500003)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 22376065) ; the Science and Technology Commission of Shanghai Municipality (No. 22ZR1418600) ; and Shanghai Municipal Science and Technology (No. 20DZ2250400) .

语种：英文

外文关键词：Ethylene glycol electrooxidation; Synergistic reactive sites; In situ reconstruction; *OH production; Glyoxal

摘要：The replacement of water oxidation with thermodynamically favorable nucleophile oxidation reactions, such as the ethylene glycol oxidation reaction (EGOR), offers a promising approach to enhancing hydrogen production at reduced potentials. However, the competitive adsorption of hydroxyl and ethylene glycol molecules, along with side reactions like oxygen evolution, significantly impair the efficiency and selectivity of EGOR. In this work, a hierarchical composite catalyst consisting of Au/CuO on Ni foam, which can be in situ reconstructed into Au/ CuOOH/NiOOH is presented. This modified catalyst provided synergistic multi-reactive sites for efficient EG electrooxidation. The resulting Au/CuOOH/NiOOH demonstrated a current density of 175 mA cm-2 at 1.5 V vs. reversible hydrogen electrode (RHE), achieving Faradaic efficiency of 96 % for EGOR and remarkable stability for over 200 h. A range of spectroscopic characterizations, electrochemical investigations, and theoretical calculations revealed that the in situ generated NiOOH served as the site for the adsorption and activation of OH-, CuOOH synergistically activated the EG reactant, while Au promoted catalytic performance by providing additional reactive sites for *OH and EG adsorption. Notably, glyoxal was identified as the special product of EGOR, resulting from the further oxidation of formic acid, which consumed the adsorbed *OH and inhibited additional oxidation of glyoxal. This work clarifies the specific EGOR mechanism on the composite catalyst and offers valuable insights into the design of multi-site synergistic catalytic electrodes.