▎ 摘　　要

We fabricated MoS2/TiO2/graphene (MTG) nanohybrids using a hydrothermal process in the preparation of heterostructure photocatalysts. The MTG nanohybrids exhibited high stability, large specific surface area, and visible light response. The heterostructure nanohybrids were effective in the visible-light photodegradation of tetracycline (TC), rhodamine B (RhB), and congo red (CR), as well as Pb(ii) reduction. The nanohybrids exhibited a photocatalytic TC removal capability of 94.5% with 60 min of visible light irradiation. Suppressing the recombination of photoexcited electron-hole pairs enhanced the removal of environmental pollutants. The MTG nanohybrids also displayed photocatalytic reduction of Pb(ii), approximately 10-15 times that of bare MoS2 and TiO2 samples. The nanohybrids also showed efficient photocatalytic antibacterial performance, killing 99.9% of E. coli in 10 min, thus demonstrating environmental friendliness in water disinfection. The results clearly demonstrated promising nanohybrids for the photocatalytic removal of a wide variety of contaminants, such as hazardous organic chemicals, heavy metals, and pathogenic microbes, under visible light irradiation.