X射线光电子能谱
材料科学
光催化
光谱学
光致发光
纳米技术
石墨烯
光催化分解水
表面光电压
半导体
分解水
氧烷
光电子学
化学工程
催化作用
化学
物理
生物化学
量子力学
工程类
作者
Jingrun Ran,Ling Chen,Deyu Wang,Amin Talebian‐Kiakalaieh,Yan Jiao,Mahmoud A. Hamza,Yang Qu,Liqiang Jing,Kenneth Davey,Shi Zhang Qiao
标识
DOI:10.1002/adma.202210164
摘要
Abstract Solar hydrogen (H 2 ) generation via photocatalytic water splitting is practically promising, environmentally benign, and sustainably carbon neutral. It is important therefore to understand how to controllably engineer photocatalysts at the atomic level. In this work, atomic‐level engineering of defected ReSe 2 nanosheets (NSs) is reported to significantly boost photocatalytic H 2 evolution on various semiconductor photocatalysts including TiO 2 , CdS, ZnIn 2 S 4 , and C 3 N 4 . Advanced characterizations, such as atomic‐resolution aberration‐corrected scanning transmission electron microscopy (AC‐STEM), synchrotron‐based X‐ray absorption near edge structure (XANES), in situ X‐ray photoelectron spectroscopy (XPS), transient‐state surface photovoltage (SPV) spectroscopy, and transient‐state photoluminescence (PL) spectroscopy, together with theoretical computations confirm that the strongly coupled ReSe 2 /TiO 2 interface and substantial atomic‐level active sites of defected ReSe 2 NSs result in the significantly raised activity of ReSe 2 /TiO 2 . This work not only for the first time realizes the atomic‐level engineering of ReSe 2 NSs as a versatile platform to significantly raise the activities on different photocatalysts, but, more importantly, underscores the immense importance of atomic‐level synthesis and exploration on 2D materials for energy conversion and storage.
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