物理化学学报 >> 2007, Vol. 23 >> Issue (06): 959-963.doi: 10.3866/PKU.WHXB20070633

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溶剂热合成具有海绵状结构的介孔SnO2

赵海军; 候海涛; 曹洁明; 郑明波; 刘劲松; 张防   

  1. 南京航空航天大学材料科学与技术学院纳米材料研究所, 南京 210016

  • 收稿日期:2006-10-31 修回日期:2006-12-27 发布日期:2007-06-04
  • 通讯作者: 曹洁明 E-mail:jmcao@nuaa.edu.cn

Solvothermal Synthesis of Mesoporous SnO2 with Spongy Structure

ZHAO Hai-Jun; HOU Hai-Tao; CAO Jie-Ming ZHENG Ming-Bo; LIU Jing-Song; ZHANG Fang   

  1. Nanomaterials Research Institute, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China

  • Received:2006-10-31 Revised:2006-12-27 Published:2007-06-04
  • Contact: CAO Jie-Ming E-mail:jmcao@nuaa.edu.cn

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摘要：

采用溶剂热方法, 以SnCl4·5H2O/尿素/乙醇三元体系合成了具有特定结构的前驱体, 该前驱体经焙烧后得到了具有海绵状结构的介孔SnO2. 利用X射线粉末衍射(XRD)、傅立叶红外吸收光谱(FT-IR)、透射电镜(TEM)、热分析(TG-DTA)和氮气等温吸附鄄脱附等方法对产物的结构、形貌和热稳定性进行表征. 结果表明, 300 ℃焙烧处理后的样品由粒径约为5 nm的纳米粒子堆积而形成海绵状结构, 其中孔的尺寸范围在2-8 nm, 样品比表面积达到了134 m2·g-1.

关键词: 二氧化锡, 溶剂热合成, 介孔, 纳米粒子, 热处理

Abstract: Mesoporous tin dioxide (SnO2) was synthesized by thermal decomposition of the precursor obtained via a solvothermal method in the presence of SnCl4·5H2O, urea and ethanol. The calcined sample was characterized in detail by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) techniques, transmission electron microscopy(TEM), thermal analysis (TG-DTA) and nitrogen adsorption-desorption measurements. The characterization results showed that the calcined sample in 300 ℃ was spongy structure tin dioxide with meso-porosity which was formed by accumulating nanoparticles (particle size: ca 5 nm). The pore size ranged from 2 to 8 nm, and the BET surface area increased to 134 m2·g-1.

Key words: Tin dioxide, Solvothermal synthesis, Mesoporous, Nanoparticle, Heat treatment