光催化
异质结
分解水
纳米点
材料科学
可见光谱
光催化分解水
氧化还原
载流子
石墨氮化碳
罗丹明B
光降解
纳米技术
化学工程
催化作用
带隙
氮化碳
半导体
光电子学
X射线光电子能谱
化学
工程类
冶金
生物化学
作者
Yabin Jiang,Zongzhao Sun,Qianwen Chen,Chen Cao,Yun Zhao,Wensheng Yang,Lei Zeng,Limin Huang
标识
DOI:10.1016/j.apsusc.2021.151287
摘要
It is a considerable challenge to design a highly efficient photocatalyst for overall water splitting. Herein, a zero-dimension/two-dimension (0D/2D) TiO2 nanodots/g-C3N4 step-scheme (S-scheme) photocatalyst (TOCN) for overall water splitting was prepared by a facile phase interfacial reaction. TOCN showed higher photocatalytic water splitting activity under simulated sunlight, which is about 2.2 and 1.7 times higher than TiO2 nanodots and g-C3N4, respectively. The enhancement of photocatalytic performance can be mainly attributed to the formation of S-scheme heterojunction, rather than normal type-II heterojunction, which could not only improve charge separation but also remain the redox ability of TiO2 and g-C3N4. This work presents a simple method to construct an efficient photocatalyst with S-Scheme heterojunction for overall water splitting.
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