Study of N-doping in (Bi2MoO6, MoO3)/SnOx:N photocatalys in the degradation of RhB using visible light

Novel composites operating in visible light (VL) energy are an important issue in photon excited system. The (Bi2MoO6, MoO3)/SnO x :N composite photocatalysts were prepared by the one-step spray pyrolysis method. The effect of N-doping in SnO x layer with controlled N/Sn ratio in precursor to the photocatalystic ability of the composite was studied. The photocatalytic ability of the composites was evaluated by photodegradation of Rhodamine B (RhB) under visible-light emitting diode illumination. The composites were characterized by film optical absorption analysis, X-ray diffraction and scanning electron microscopy. Film with suitable N-doping shows the improved visible-light photocatalytic ability with rate constant 0.019 min − 1 . With the electrical property of SnO x :N films and the scavenger analysis of the composites, the photocatalytic mechanism was discussed.