Abstract
Hollow MoS2/g-C3N4 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 H2 production from lactic acid aqueous solution with visible-light irradiation. The results showed that MoS2/HCNS nanojunctions exhibited enhanced photocatalytic H2 production, which could be attributed to the thin layered junctions formed between MoS2 and HCNS for efficient charge separation and the active sites provided by MoS2 for H2 production at lower over potentials.
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