Layering MoS2 on soft hollow g-C3N4 nanostructures for photocatalytic hydrogen evolution

Abstract Hollow MoS 2 /g-C 3 N 4 hybrids were obtained through a combination route of hard-templating technique and impregnation-sulfidation method. The physicochemical, optical/electric and electrocatalytic properties of the obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy, photoluminescence (PL) spectroscopy and electrochemical measurement. Their photocatalytic activities were evaluated by H 2 production from lactic acid aqueous solution with visible-light irradiation. The results showed that MoS 2 /HCNS nanojunctions exhibited enhanced photocatalytic H 2 production, which could be attributed to the thin layered junctions formed between MoS 2 and HCNS for efficient charge separation and the active sites provided by MoS 2 for H 2 production at lower over potentials.