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 NPs@NF.At 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.
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).
