Abstract

Sn-doped nano-Bi₂WO₆ photocatalyst has been synthesized by a hydrothermal route at 180 °C for 12 h. The as-prepared samples were characterized in details by SEM, EDS, XRD and UVvis DRS technologies. The photocatalytic activities of obtained products were determined by photodegradation of Rhodamine B (RhB) under simulated solar light. Experimental results indicated that the tin doping evidently improved the photocatalytic activity of Bi₂WO₆. The possible reasons for higher photocatalytic efficiency of Sn-doped nano-Bi₂WO₆ than that of pure Bi₂WO₆ are mainly ascribed to the addition of Sn ions which could suppress recombination between photogenerated electrons and holes.

Keywords: Doping, nano-Bi₂WO₆, photocatalytic, .