Journal of Inorganic Materials

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Photocatalytic Degradation of Methyl Orange via SrNb2O6 and SrNb2O6/Nb2O5 Composite

XING Jing-Cheng11,2, BIAN Jian-Jiang2, YANG Jian-Hua1, HUANG Fu-Qiang1   

  1. (1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Department of Material Science and Technology, Shanghai University, Shanghai 200072, China.)
  • Received:2006-09-06 Revised:2006-10-26 Published:2007-09-20 Online:2007-09-20

Abstract:

SrNb2O6 powders were prepared by a conventional solid-state method and characterized by X-ray powder diffraction and UV-Vis diffuse reflection spectra. Their photocatalytic activities were investigated on the degradation of methyl orange. The results show that the photocatalytic activity of pure phase SrNb2O6 calcined at 1400℃ is lower than that of the impure
phase SrNb2O6 calcined at 950℃. The heterojunction model is used to explain that the impure sample can improve the photocatalytic activity due to the interface interaction of Nb2O5 and SrNb2O6.

Key words: photocatalytic, methyl orange, SrNb2O6, SrNb2O6/Nb2O5 heterojunction

CLC Number: