Enhancing the photoelectrochemical performance of p-silicon through TiO_(2)coating decorated with mesoporous MoS_(2)

作     者：Hongmei WU Feng LI Yanqi YUAN Jing LIU Liping ZHAO Peng ZHANG Lian GAO Hongmei WU;Feng LI;Yanqi YUAN;Jing LIU;Liping ZHAO;Peng ZHANG;Lian GAO

作者机构：School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Frontiers in Energy》 (能源前沿（英文版）)

年 卷 期：2021年第15卷第3期

页      面：772-780页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.51672174,51779139,51772190,and 51972210) the Advanced Energy Material and Technology Center of Shanghai Jiao Tong University,China 

主　　题：photoelectrocatalysis hydrogen evolution Si photocathode mesoporous MoS_(2) 

摘      要：MoS_(2)is a promising electrocatalyst for hydrogen evolution reaction and a good candidate for cocatalyst to enhance the photoelectrochemical(PEC)performance of Si-based photoelectrode in aqueous *** main challenge lies in the optimization of the microstructure of MoS_(2),to improve its catalytic activity and to construct a mechanically and chemically stable cocatalyst/Si *** this paper,a highly-ordered mesoporous MoS_(2)was synthesized and decorated onto a TiO_(2)protected p-silicon *** additional TiO_(2)necking was introduced to strengthen the bonding between the MoS_(2)particles and the TiO_(2)*** meso-MoS_(2)/TiO_(2)/p-Si hybrid photocathode exhibited significantly enhanced PEC performance,where an onset potential of+0.06 V(versus RHE)and a current density of-1.8 mA/cm^(2)at 0 V(versus RHE)with a Faradaic efficiency close to 100%was achieved in 0.5 mol/L H_(2)SO_(4).Additionally,this meso-MoS_(2)/TiO_(2)/p-Si photocathode showed an excellent PEC ability and durability in alkaline *** paper provides a promising strategy to enhance and protect the photocathode through high-performance surface cocatalysts.