Ultra-low potential formaldehyde electrooxidation to formate and H_(2) on an Ag/Ag_(2)O heterostructure catalyst  

作　　者：Haitao Shi Rui Zhang Chongchong Wang Xiaoping Kong Linlin Pan Meijie Wei Wei Wang Weixin Lv Lei Wang 

机构地区：[1]School of Chemistry and Chemical Engineering,Yancheng Institute of Technology,Yancheng 224051,China [2]Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education of the People’s Republic of China,Heilongjiang University,Harbin 150080,China

出　　处：《Nano Research》2025年第2期131-140,共10页纳米研究(英文版)

基　　金：The work was supported by the National Natural Science Foundation of China(Nos.22176166 and 22179034);the Natural Science Foundation of Heilongjiang Province(No.ZD2023B002).

摘　　要：Formaldehyde oxidation reaction(FOR)is a promising reaction alternative to the anodic oxygen evolution reaction(OER)owing to its ultra-low electrolysis potential and ability to produce formate and hydrogen gas.In this work,the electrode for FOR is prepared using Ag/Ag_(2)O nanoparticles(Ag/Ag_(2)O NPs)covered with Nafion membrane as the catalysts modified onto nickel foam(NF).Ag/Ag_(2)O NPs@NF exhibits significantly higher FOR activity than Ag NPs@NF and Ag_(2)O [e-mail] 100 mA·cm^(-2),the FOR potential on the Ag/Ag_(2)O NPs@NF electrode is only 0.16 V(vs.RHE).Meanwhile,the Faradaic efficiencies can reach up to 100% for both formate and H_(2) produced by FOR.Density functional theory(DFT)calculations indicate that the Ag/Ag_(2)O heterostructure exhibits lower reaction energy barriers for generating formate and H2 than pure Ag and Ag_(2)O.This work introduces a new synthetic approach for developing novel FOR catalysts and offers insights into the potential application prospects of FOR.

关 键 词：formaldehyde oxidation ultra-low potential HETEROSTRUCTURE 200%hydrogenation formate production 

分 类 号：O64[理学—物理化学]