In situ growth of different numbers of gold nanoparticles on MoS_2 with enhanced electrocatalytic activity for hydrogen evolution reaction

作     者：赵宣 何大伟 王永生 付晨 Xuan Zhao;Da-Wei He;Yong-Sheng Wang;Chen Fu

作者机构：Key Laboratory of Luminescence and Optical Information Beijing Jiaotong University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2018年第27卷第6期

页      面：473-478页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by the National Basic Research Program,China(Grant Nos.2016YFA0202300 and 2016YFA0202302) the National Natural Science Foundation of China(Grant Nos.61527817,61335006,and 61378073) the Beijing Municipal Science and Technology Committee,China(Grant No.Z151100003315006) 

主　　题：MoS2 AuNPs hydrogen evolution reaction electrocatalysts 

摘      要：Producing hydrogen through a hydrogen evolution reaction（HER） by splitting water at the suitable overpotential is a great alternative to solving the problems of environmental pollution and the energy crisis. Molybdenum sulfide（MoS2）has attracted extensive attention as one of the most promising catalytic materials for HER. In this work, we design a facile method to in situ grow gold nanoparticles（Au NPs） on MoS2. Different numbers of Au NPs with MoS2 are used to find the best catalytic activity. Due to the larger active surface area and higher conductivity of the Au–MoS2 composites, all the Au–MoS2 composites exhibit more enhanced HER electroactivity than pure MoS2. In brief, the new material architecture exhibits optimized HER activity with a low onset overpotential of 0.12 V, low Tafel slope of 0.163 V·dec^（-1）, and an excellent stability in acidic solution.