塔菲尔方程
过电位
材料科学
催化作用
光敏剂
热液循环
色散(光学)
制氢
化学工程
电子转移
光催化
金属
分解水
电化学
光化学
电极
有机化学
物理化学
化学
光学
冶金
工程类
物理
作者
Bing Ma,Pei-Yao Guan,Qiuying Li,Mei Zhang,Shuang‐Quan Zang
标识
DOI:10.1021/acsami.6b08740
摘要
A simple hydrothermal method is developed for synthesizing crystalline MoS2@TiO2 nanohybrids with metal-organic framework (MOF) as precursor. At an optimal ratio of 14.6 wt % MoS2, the resultant material exhibits prominent catalytic activity for hydrogen evolution reaction (HER) with a high hydrogen production rate of 10 046 μmol h-1 g-1 under visible light illumination with fluorescein as photosensitizer. Furthermore, the synthesized catalyst also possesses an attractive electrocatalytic activity with an onset overpotential of -300 mV (vs RHE) and a Tafel slope of ∼81 mV dec-1. The enhanced catalyst performances are mainly attributed to the in situ formed active sites, featuring a uniform dispersion and strong connection of MoS2 and TiO2, which can facilitate electron transfer. In addition, the MoS2@TiO2 nanohybrids are highly stable and completely recyclable over HER.
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