光催化
催化作用
材料科学
制氢
贵金属
化学工程
氮化碳
金属
纳米技术
氢
氮化物
化学
冶金
有机化学
工程类
图层(电子)
作者
Jianjian Yi,Xiaojie She,Yanhua Song,Mao Mao,Kaixiang Xia,Hui Xu,Zhishen Mo,Jingjie Wu,Hui Xu,Huaming Li
标识
DOI:10.1016/j.cej.2017.10.125
摘要
To date, despite significant achievements in noble-metal co-catalysts, it is still challenging to develop high-performance noble-metal-alternative co-catalysts for economic hydrogen production. In this work, we demonstrate that the metallic 1T-WS2 obtained through a facile solvothermal method can function as co-catalyst for boosting the photocatalytic hydrogen production with the merits below: (i) noble-metal-free; (ii) excellent electrical conductivity; (iii) extra active sites on basal plane rather than edge sites for H2 generation. As demonstrated in photocatalytic hydrogen evolution, the designed composite using two-dimensional carbon nitride (2D-C3N4) as semiconductor and 1T-WS2 as co-catalyst (1T-WS2/2D-C3N4) exhibits giant enhancement, in comparison with the bare 2D-C3N4 and 2H-WS2/2D-C3N4. This work highlights the surface engineering strategy of co-catalysts such as phase engineering for promoting the photocatalytic performance.
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