Synthesis of novel MoS2/g-C3N4 nanocomposites for enhanced photocatalytic activity

Abstract

So far, the synthesis of high-activity and low-cost photocatalysts remains a huge challenge. 3D flower-like MoS2/g-C3N4 hybrids were synthesized by a very simple method. All of them were characterized by various characterizations to determine the composition, morphology, and properties of the compounds. There are many sites with large specific surface area catalytic activity in this structure. These composites are all photocatalytic degradable organic dyes, and the photocatalytic properties of the flower-like 4% MoS2/g-C3N4 are the best. The stability and recyclability of the 4% MoS2/g-C3N4 photocatalyst are also excellent. The 4% MoS2/g-C3N4 can also have photocatalytic ability to produce hydrogen. 50 mg of 4% MoS2/g-C3N4 photocatalyst can produce about 156 umol of hydrogen with visible light irradiation for about 4 h. Rate of hydrogen production is about 780 µmol h − 1 g − 1. In view of the good photocatalytic performance of the catalyst, we have discussed the mechanism both photocatalytic degradation of organic harmful pollutants and photocatalytic hydrogen production.