异质结
光催化
材料科学
热液循环
纳米技术
制作
化学工程
纳米颗粒
氢
载流子
制氢
复合数
催化作用
光电子学
化学
复合材料
有机化学
病理
工程类
医学
替代医学
作者
Yibin Song,Yanmei Guo,Shaopeng Qi,Ke Zhang,Jinfan Yang,LI Bing-nan,Jinxi Chen,Yixin Zhao,Yongbing Lou
标识
DOI:10.1016/j.jallcom.2021.161035
摘要
Heterojunction has been considered to be one of the most effective methods for efficient hydrogen evolution reaction by photocatalytic water splitting. In this work, nanostructured Cu7S4/MnIn2S4 heterojunction was successfully fabricated via a simple two-step method, which was much simpler than most heterojunction synthesis. Firstly, Cu7S4 nanoparticles were synthesized by oil bath stirring, and then the Cu7S4/MnIn2S4 heterojunctions were synthesized by the hydrothermal method. The prepared Cu7S4/MnIn2S4 composite exhibited significantly improved hydrogen evolution activity with a rate of 13.81 μmol h−1 (10 mg catalyst), which was approximately 18 times higher than that of pristine MnIn2S4. This result could be attributed to the construction of p-n heterojunction for promoting the separation of photogenerated charge carriers and inhibiting their recombination. Possible electron transfer mechanism was proposed by the related characterization. This work will inspire the simple fabrication of nano-heterojunctions in the future.
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