量子点
光催化
纳米复合材料
材料科学
纳米技术
复合数
钙钛矿(结构)
三嗪
共价键
催化作用
化学工程
化学
复合材料
高分子化学
有机化学
工程类
作者
Yong Zheng,Tao Gao,Shan Chen,Calum T. J. Ferguson,Kai A. I. Zhang,Fang Fan,Yi Shen,Niaz Ali Khan,Long Wang,Liqun Ye
标识
DOI:10.1016/j.coco.2022.101390
摘要
Hydrogen peroxide (H2O2) artificial photocatalysis technology promises a bright prospect in solving the burgeoning energy and environmental challenges. Covalent triazine frameworks (CTFs) is an exciting group of promising photocatalysts for H2O2 production. However, single CTF still suffers from unsatisfactory photocatalytic behavior primarily owing to the severe charge recombination and the lack of proficient dioxygen (O2) adsorption/activation catalytic sites. Herein, porous CsPbBr3 quantum dots (QDs)-decorated CTFs (CsPbBr3/CTFs) nanocomposites were prepared through an in-situ composite method for robust photocatalytic H2O2 evolution from O2 without using any sacrificial agents. The nanocomposites exhibit a significantly boosted performance toward photocatalytic H2O2 production compared with pristine CsPbBr3 and CTFs. The reaction activity can reach a highest value of 134.6 μM h−1, which is 13.3-times than that of the pristine CTFs. Additionally, the rationally designed porous CsPbBr3/CTFs nanocomposites achieved a solar-to-chemical conversion efficiency of 0.14%, beyond most photocatalysts previously reported. The unique composite effect is key to synergistically enhance charge separation and achieve efficient H2O2 production. This work is anticipated to offer alternative avenues to exploit halide perovskite QDs and CTFs in various photocatalytic reactions.
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