Yu Yan, Sun Yanan, Ge Beixiao, Yan Jiawen, Zhang Kaili, Chen Hui, Hu Jinxing, Tang Juntao, Song Shuang, Zeng Tao
College of Science & Technology, Ningbo University, Ningbo, 315212, People's Republic of China.
College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China.
Environ Sci Pollut Res Int. 2023 Feb;30(10):27570-27582. doi: 10.1007/s11356-022-24184-1. Epub 2022 Nov 16.
Herein, a series of covalent triazine framework/bismuth vanadate (CTF/BiVO) heterojunction catalysts were prepared using the hydrothermal method. The mechanism of the CTF/BiVO heterojunction photocatalyst in the system was examined to provide a theoretical basis for constructing a high-efficiency photocatalysis composite system for removing organic pollutants from water. Compared with CTF and BiVO catalysts alone, composite materials have been shown to have significantly higher degradation efficiencies against organic pollutants in water. Moreover, the degradation effect was found to be optimal when the mass ratio of CTF to BiVO was 1:1 (1-CTF/BiVO). On the basis of physicochemical characterization results, it was concluded that the effective construction of CTF/BiVO composite photocatalyst material systems and the formation of type II heterojunction structures between CTF and BiVO effectively promote the separation of photogenerated carriers and increase the interface charge transfer efficiency.
在此，采用水热法制备了一系列共价三嗪骨架/钒酸铋（CTF/BiVO）异质结催化剂。研究了CTF/BiVO异质结光催化剂在该体系中的作用机理，为构建用于去除水中有机污染物的高效光催化复合体系提供理论依据。与单独的CTF和BiVO催化剂相比，复合材料对水中有机污染物的降解效率显著更高。此外，当CTF与BiVO的质量比为1:1（1-CTF/BiVO）时，降解效果最佳。根据物理化学表征结果得出结论，CTF/BiVO复合光催化剂材料体系的有效构建以及CTF与BiVO之间II型异质结结构的形成有效地促进了光生载流子的分离并提高了界面电荷转移效率。
