A simple preparation of carbon doped porous Bi2O3 with enhanced visible-light photocatalytic activity

Carbon doped bismuth oxide (Bi2O3) with a porous structure is obtained by a simply calcination of bismuth nitrate pentahydrate (Bi(NO3)3⋅5H2O) in glycol solution. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and UV–Vis absorption spectroscopy. The photocatalytic activity was evaluated by the photocatalytic degradation of methyl orange (MO) in an...