Fabrication of MoS2QDs/Ag3PO4 photocatalyst for efficient visible light catalysis

Silver phosphate (Ag3PO4) has excellent photocatalytic performance under visible light irradiation, but it has the disadvantages of poor stability and high cost. MoS(2)QDs/Ag3PO4 composites were successfully prepared by a simple precipitation method. The photocatalytic performance of rhodamine B was studied by simulating its degradation under visible light. MoS(2)QDs/Ag3PO4-1 composites have shown good photocatalytic activity. Within 4 min, the degradation rate of RhB reached 99.6%, which was due to the accelerated spatial separation of charge carriers by MoS(2)QDs. The cyclic test results have shown that the composite material has good cyclic stability. After five cycle tests, the activity of the composite remained above 85%. Finally, the experimental data of free radical capture has provided a possible model to explain the degradation mechanism of RhB.

Automated summary

MoS(2)QDs/Ag3PO4 composites were successfully prepared by a simple precipitation method. The composites exhibited good photocatalytic activity and cyclic stability under visible light irradiation, and accelerated the spatial separation of charge carriers.