Construction of a Direct Z-Type Heterojunction Relying on Mos2 Electronic Transfer Platform Towards Enhanced Photodegradation Activity of Tetracycline

In this study, the hydrothermal in situ growth technique was used to controllably produce the stable nanoflower-like Pt-MoS2/BiVO4 (Pt-MS/BVO) composite. MoS2 nanospheres were embellished with BiVO4 and Pt nanoparticles. Excellent photocatalytic efficiency for the TC degradation was demonstrated by the Pt-MS/BVO composite. In the light irradiation, degradation efficiency was 11 and 5 times higher than MoS2 and BiVO4, respectively. The reaction speed of Pt-MS/BVO was 1.9, 3.2, and 18.3 times that of MoS2/BiVO4 (MS/BVO), BiVO4, and MoS2, according to the photocatalytic kinetics fitting curve. MoS2 not only resulted in good dispersion of Pt and BiVO4, furthermore but also performed a significant part in the creation of direct Z-type charge-transfer composites with relatively short charge diffusion distances and abundant intimate contact interfaces, while the noble metal Pt acted as an electron collector to suppress the electron–hole complexation rate, thus improving the photocatalytic activity. This study sheds light on the ternary photocatalyst’s rational design for multilayer electron transport and achieves efficient removal of tetracycline residues in the water environment.