Abstract
Abstract A novel reduced graphene oxide/NaBiO3·2H2O (rGO/NBH) composites were successfully synthesized by a simple in situ photoreduction method for the first time. Their morphologies and structures were thoroughly characterized by Powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV–Vis diffuse reflectance spectroscopy (DRS), photoluminescence spectra (PL) and photocurrent examination. Detailed characterization indicated that graphene oxides were in-situ reduced under semiconductor-assisted photoreduction. Visible-light driven degradation of Rhodamine B (RhB) showed that the prepared rGO/NBH-0.8% exhibited best photocatalytic performance compared with the counterparts, which enabled the RhB removal rate up to 90.1% in 80 min of illumination. The enhancement of photocatalytic ability could be attributed to the conductive rGO nanosheet and thus the effective separation and transfer of photogenerated carriers across the intimate interface between rGO and NBH.
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