光催化
异质结
材料科学
肖特基势垒
载流子
纳米颗粒
化学工程
纳米技术
氢
分解水
制氢
催化作用
光电子学
化学
工程类
二极管
有机化学
生物化学
作者
Yujin Zhang,Kailing Zhou,Chunyu Yuan,Huijun Lv,Hongfei Yin,Fei Qian,Dongdong Xiao,Yongzheng Zhang,Woon‐Ming Lau
标识
DOI:10.1016/j.jcis.2023.09.096
摘要
Surface and interface engineering of composite photocatalysts are effective ways to enhance the dynamics of photo-generated charge carriers. In this work, SrTiO3/Ti3C2 MXene (STO/TC) Schottky heterojunction is constructed by in-situ growth of SrTiO3 (STO) on Ti3C2 MXene (TC) through Sr(OH)2 etching the surfaces of TC. This in-situ growth strategy not only creates the tight chemically bonded interfaces by SrTiO3 nanoparticles uniformly anchoring on the surface of two-dimensional Ti3C2 MXene nanosheets for promoting the photo-generated charge carrier separation, but also introduces surface Ti vacancies as the efficient catalytic active sites to accelerate the charge carrier transfer process for efficient hydrogen production. The photocatalytic system constructed by interface and surface engineering optimizes the photo-generated charge carrier dynamics and refines the photocatalytic hydrogen evolution performance (6.8 times higher than pristine SrTiO3) and stability. This work is expected to provide an alternative strategy to construct highly efficient photocatalysts with hydrogen evolution.
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