Acta Phys. -Chim. Sin. ›› 2006, Vol. 22 ›› Issue (10): 1212-1216.doi: 10.3866/PKU.WHXB20061008

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Synthesis of Fe3+-modified SnO2 Nanoparticles by Hydrothermal Method

FANG Li-Mei;LI Zhi-Jie;LIU Chun-Ming;ZU Xiao-Tao   

  1. Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
  • Received:2006-04-04 Revised:2006-05-12 Published:2006-10-11
  • Contact: ZU Xiao-Tao E-mail:xtzu@uestc.edu.cn

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Abstract: Fe3+-modified SnO2 nanoparticles were directly prepared by hydrothermal method, and were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared (FT-IR) spectroscopy, and UV-Vis diffuse reflectance spectra (DRS). It was found that rutile phase was directly synthesized without calcination. The Fe3+-modified SnO2 nanoparticles were well dispersed with narrow size distribution. The crystalline size of SnO2 decreased from 6.0 to 3.8 nm when the Fe3+ content increased from 0 to 20%. The specific surface area of pure SnO2 was 206.1 m2•g−1, and it increased to 259.8 m2•g−1 when Fe content was 15%. A considerable red shift in the absorbing band edge was observed as increase of Fe3+ content. XRD and DRS proved that Fe3+ and SnO2 formed solid solution nanoparticles.

Key words: SnO2, Nanoparticles, Hydrothermal, Modified