Preparation and photocatalytic activity of Sb2S3/Bi2S3 doped TiO2 from complex precursor via gel-hydrothermal treatment

Sb2S3/Bi2S3 doped TiO2 were prepared with the coordination compounds [M(S2CNEt)(3)] (M=Sb, Bi; S2CNEt=pyrrolidinedithiocarbamate) as precursors via gel-hydrothermal techniques. The doped TiO2 were characterized by XRD, SEM, XPS and UV-vis diffuse reflectance means. The photocatalyst based on doped TiO2 for photodecolorization of 4-nitrophenol (4-NP) was examined. The optimal Bi2S3/Sb2S3 content, pH and different doped techniques have been investigated. Photocatalytic tests reveal that M2S3 doped TiO2 via the gel-hydrothermal route performs better photocatalytic activity for photo-degradation reaction of 4-nitrophenol (4-NP). (C) 2010 Elsevier Inc. All rights reserved.