共价有机骨架
异质结
光催化
载流子
材料科学
共价键
可见光谱
制氢
热液循环
纳米技术
催化作用
氢
化学
化学工程
光化学
光电子学
有机化学
工程类
作者
Dandan Shang,Di Li,Biyi Chen,Bifu Luo,Yuanyong Huang,Weidong Shi
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2021-10-11
卷期号:9 (42): 14238-14248
被引量:52
标识
DOI:10.1021/acssuschemeng.1c05162
摘要
Covalent organic frameworks (COFs) are a category of promising materials in the field of solar-driven hydrogen (H2) evolution, but their applications are limited by the speedy recombination of photoinduced charge carriers and the absorption of marginal visible light. Herein, a 2D–2D SnS2/TpPa-1-COF heterojunction photocatalyst was prepared via a one-step hydrothermal route to relieve the abovementioned shortcomings. The results show that the obtained 2D–2D SnS2/TpPa-1-COF heterojunctions not only speed up the separation of photogenerated charge carriers but also facilitate the H2 production kinetics and expand the range of visible light response to orange light (600 nm). Especially, the maximum photocatalytic H2 production rate of the 2D–2D SnS2/TpPa-1-COF heterojunction without the addition of cocatalyst Pt reaches 37.11 μmol h–1, which is 21.7-fold and 2-fold higher than those of individual TpPa-1-COF and 3 wt % Pt/TpPa-1-COF, respectively. This work indicates that the synthesis of cheap COF-based photocatalysts for high-efficiency solar energy utilization is a feasible approach to boost the photocatalytic H2 performance.
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