Synergistic removal of organic pollutants from water by CTF/BiVO4 heterojunction photocatalysts

Herein, a series of covalent triazine framework/bismuth vanadate (CTF/BiVO4) heterojunction catalysts were prepared using the hydrothermal method. The mechanism of the CTF/BiVO4 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 BiVO4 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 BiVO4 was 1:1 (1-CTF/BiVO4). On the basis of physicochemical characterization results, it was concluded that the effective construction of CTF/BiVO4 composite photocatalyst material systems and the formation of type II heterojunction structures between CTF and BiVO4 effectively promote the separation of photogenerated carriers and increase the interface charge transfer efficiency.

Automated summary

A series of covalent triazine-framework/bismuth vanadate (CTF/BiVO4) heterojunction photocatalysts were prepared using the hydrothermal method, and the composite materials showed significantly higher degradation efficiencies against organic pollutants in water compared to CTF and BiVO4 catalysts alone. Physicochemical characterization results suggested that the effective construction of CTF/BiVO4 composite photocatalyst material systems and the formation of type II heterojunction structures between CTF and BiVO4 effectively promoted the separation of photogenerated carriers and increased the interface charge transfer efficiency.