MOF-derived NiCo bimetallic cocatalyst for enhanced photocatalytic overall water splitting  

作　　者：Liang Dong Jingkuo Qu Tuo Zhang Guanghui Zhu Ningning Ma Chang Zhao Yi Yuan Xiangjiu Guan Liejin Guo 

机构地区：[1]International Research Center for Renewable Energy,State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an 710049,C

出　　处：《Chinese Chemical Letters》2025年第3期427-431,共5页中国化学快报(英文版)

基　　金：supported by the Basic Science Center Program for Ordered Energy Conversion of the National Natural Science Foundation of China(No.52488201);the National Natural Science Foundation of China(No.52376209);the China Postdoctoral Science Foundation(Nos.2020T130503 and 2020M673386);China Fundamental Research Funds for the Central Universities.

摘　　要：The development of stable and efficient non-noble metal cocatalysts has arisen as a promising yet challenging endeavor in the context of photocatalytic overall water splitting.In this study,NiCo alloy cocatalysts were synthesized with nickel/cobalt metal organic framework(NiCo-MOF)as source of nickel and cobalt.Systematic characterization results demonstrate the successful deposition of alloy cocatalysts onto the surface of SrTiO_(3).The prepared SrTiO_(3)loaded NiCo-alloy can generate hydrogen and oxygen in a stoichiometric ratio for photocatalytic overall water splitting,achieving an apparent quantum yield of 11.9%at 350±10 nm.Theoretical calculations indicate that the introduction of cobalt has a beneficial regulatory effect on the hydrogen evolution sites of Ni,reducing the free energy of H adsorption.The synergistic catalytic effect of bimetallic catalysts contributes to enhancing photocatalytic activity and stability.This study offers constructive insights for the development of high-efficiency and cost-effective cocatalyst systems.

关 键 词：PHOTOCATALYSIS Overall water splitting Non-noble metals Alloy COCATALYST 

分 类 号：O643.36[理学—物理化学]