光催化
异质结
纳米棒
材料科学
分解水
制氢
载流子
可见光谱
光催化分解水
氢
半导体
催化作用
纳米技术
氢燃料
化学工程
相(物质)
光电子学
光化学
化学
生物化学
工程类
有机化学
作者
Chao Ding,Chengxiao Zhao,Shi Cheng,Xiaofei Yang
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2022-02-01
卷期号:43 (2): 403-409
被引量:41
标识
DOI:10.1016/s1872-2067(21)63844-5
摘要
Solar-powered photocatalytic hydrogen production from water using semiconductors provides an eco-friendly and promising approach for converting solar energy into hydrogen fuel. Bulk semiconductors generally suffer from certain limitations, such as poor visible-light utilization, rapid recombination of charge carriers, and low catalytic capability. The key challenge is to develop visible-light-driven heterojunction photocatalysts that are stable and highly active during the water splitting process. Here, we demonstrate the integration of one-dimensional (1D) CdS nanorods with two-dimensional (2D) 1T-phase dominated WS2 nanosheets for constructing mixed-dimensional heterojunctions for the photocatalytic hydrogen evolution reaction (HER). The resulting 1D CdS/2D WS2 nanoheterojunction exhibited an ultrahigh hydrogen-evolution activity of ∼70 mmol·g−1·h−1 that was visible to the naked eye, as well as long-term stability under visible light illumination. The results reveal that the synergy of hybrid nanoarchitectures and intimate interfacial contact between the 1D CdS nanorods and 1T-phase dominated 2D WS2 nanosheets facilitates charge carrier transport, which is beneficial for achieving superior hydrogen evolution.
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