Wu Yuze, Liu Jingchao, Zhao Jinxia, Jin Chunhong, Ren Hailong, Yin Yilin, Li Zenghe
Beijing University of Chemical Technology, Beijing 100029, China.
School of Computer Science and Engineering, Beihang University, Beijing 100191, China.
Nanoscale. 2024 Jun 6;16(22):10645-10655. doi: 10.1039/d4nr00608a.
A BiO/COF composite was successfully synthesized by simple mechanical ball milling. Compared to pure BiO and COFs, the BiO/COF composite (1 : 9) showed superior photocatalytic capability. Under visible light irradiation for 90 min, the photocatalytic degradation rate of DCF reached 97%. In addition, the characterization results showed that the formation of heterojunctions and the increase in oxygen vacancy concentration were the reasons for the enhancement of the photocatalytic activity. It is confirmed by free radical capture experiments that ˙O and h are the main reactive substances in the photocatalytic process. The photocatalytic degradation mechanism of the composite and the photocatalytic degradation pathway of diclofenac were deduced.
通过简单的机械球磨成功合成了一种BiO/COF复合材料。与纯BiO和COFs相比，BiO/COF复合材料（1:9）表现出优异的光催化性能。在可见光照射90分钟后，双氯芬酸的光催化降解率达到97%。此外，表征结果表明，异质结的形成和氧空位浓度的增加是光催化活性增强的原因。自由基捕获实验证实，˙O和h是光催化过程中的主要活性物质。推导了复合材料的光催化降解机理和双氯芬酸的光催化降解途径。
