物理化学学报 >> 2006, Vol. 22 >> Issue (10): 1212-1216.doi: 10.3866/PKU.WHXB20061008

研究论文 上一篇    下一篇

水热法制备Fe3+改性的SnO2纳米颗粒

方丽梅;李志杰;刘春明;祖小涛   

  1. 电子科技大学应用物理系, 成都 610054
  • 收稿日期:2006-04-04 修回日期:2006-05-12 发布日期:2006-10-11
  • 通讯作者: 祖小涛 E-mail:xtzu@uestc.edu.cn

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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摘要： 采用水热法制备了Fe3+改性的SnO2纳米颗粒, 通过XRD、BET、TEM、FT-IR和紫外-可见漫反射光谱(DRS)对其结构和光学性质进行研究. 结果表明, 水热过程实现了氧化锡的直接晶化, 产物为金红石结构, Fe3+进入SnO2的晶格之中形成固溶体. 这种方法制备的Fe3+改性的SnO2纳米颗粒为单分散状态, 粒径分布均匀, 纯的SnO2未焙烧前平均粒径为6.0 nm, 随着Fe3+添加量的增大, 样品的粒径减小. BET显示纯的SnO2样品比表面积为206.1 m2•g−1, 随着Fe3+添加量增大, 产物的比表面积增大, 同时样品的紫外-可见吸收发生红移.

关键词: 二氧化锡, 纳米颗粒, 水热法, 改性

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