Facile synthesis of reduced graphene oxide/WO_3 nanoplates composites with enhanced photocatalytic activity

摘要

Reduced graphene oxide (rGO)/WO_3 nanoplates composites were synthesized via a facile one-pot hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance absorption spectra (DRS), fourier transform infrared spectroscopy (FTIR) and photoluminescence spectra (PL). The photocatalytic degradation of methylene blue (MB) by the rGO/WO_3 composites was investigated and optimized, suggesting the optimal amount of rGO in the composite was 15 wt%. The significantly enhanced photocatalytic activity of rGO/WO_3 composites could be attributed to the excellent accepting and transporting electrons properties of rGO.