Facile One-Step Preparation and Efficient Photocatalytic Hydrogen Production of Composite MoS₂/g-C₃N₄ Sensitized by Erythrosin B

MoS 2 /g-C 3 N 4 (g-C 3 N 4 [Formula: see text] graphitic carbon nitride) composite is considered as a promising photocatalyst for hydrogen production, while the preparation method still needs to be improved. Herein for the first time, nanosized MoS 3 and melamine were used as starting materials and a facile one-pot calcination method was successfully applied for the synthesis of MoS 2 /g-C 3 N 4 . The physical and photophysical properties of the as-prepared MoS 2 /g-C 3 N 4 were characterized by XRD, IR, SEM, TEM and XPS techniques. Sensitized by Erythrosin B (EB), the photocatalytic hydrogen production performance of MoS 2 /g-C 3 N 4 was investigated and the amount of MoS 2 was optimized. An excellent H 2 production activity of 1091.2[Formula: see text][Formula: see text] was achieved for 43% MoS 2 /g-C 3 N 4 , which is about 330 times that of pure g-C 3 N 4 (3.3[Formula: see text][Formula: see text]. In addition, its performance was compared with those of three other MoS 2 /g-C 3 N 4 samples prepared by conventional methods and a possible mechanism of H 2 production was proposed based on the photoluminescence and photoelectrochemical results.