溶胶-凝胶法制备锑掺杂氧化锡纳米粉体
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国家自然科学基金(50902049)


Synthesis of antimony-doped tin oxide nanoparticles by sol-gel method
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    摘要:

    锑掺杂二氧化锡(antimony-doped tin oxide,ATO)是优良的催化剂,具有良好的导电性和高温稳定性。采用溶胶-凝胶法制备ATO纳米粉体,并对其进行结构分析和性能表征。以金属锡粉和三氧化二锑为金属原料,制备得到柠檬酸锡、锑的配合物溶液,向其中加入乙腈,产生溶胶-凝胶过程。对洗涤后的凝胶进行不同温度热处理,得到锑掺杂氧化锡纳米粉体。随着锑掺杂量的增加,纳米粉体的晶粒减小,比表面积增加,晶胞参数也发生相应变化。随着热处理温度的升高,纳米颗粒长大,比表面积减小,高锑掺杂量的氧化锡纳米粉体显示出结晶性下降的趋势。

    Abstract:

    Antimony-doped tin dioxide is an excellent catalyst, which has good electrical conductivity and high temperature stability. The sol-gel method is used to prepare ATO nanopowders, and their structure characterization and performance analysis are also conducted. Stable tin and antimony citrate complexes solution is obtained from the starting materials metal tin and antimony trioxide. The solution undergoes sol-gel transformtion when acetonitrile is added dropwise. Antimony doped tin oxide nanoparticles are obtained with the washed gel heat-treated at different temperatures. The antimony doped tin oxide nanoparticles exhibit shrinking crystallite size, increasing specific surface area and tin oxide lattice parameters changing with the rise of antimony doping content. The crystalline size increases, while speciflc surface area decreases with the increase of annealing temperature. The particle crystallinity shows a decrease tendency for the high antimony doping level with increasing temperatures.

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殷 馨,张建荣,许国栋,王海文.溶胶-凝胶法制备锑掺杂氧化锡纳米粉体[J].河北工业科技,2015,32(1):1-7

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  • 收稿日期:2014-06-14
  • 最后修改日期:2014-09-18
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  • 在线发布日期: 2015-01-16
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