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›› 2005, Vol. 5 ›› Issue (3): 305-308.

• 过程与工艺 • 上一篇    下一篇

表面活性剂PEG在掺锑纳米SnO2粉末氧化共沉淀制备中的作用

卫芝贤,欧海峰,宫喜军,孙新建,朱振晓   

  1. 中北大学化工系
  • 出版日期:2005-06-20 发布日期:2005-06-20

Study on the Function of Additive-PEG in the Preparation of Sb-doped SnO2 Nano-powder via Oxidative-coprecipitation

WEI Zhi-xian,OU Hai-feng,GONG Xi-jun,SUN Xin-jian,ZHU Zhen-xiao   

  1. Dept. Chem. Eng., North China University
  • Online:2005-06-20 Published:2005-06-20

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被引次数

106

摘要： 通过粒度分布、红外光谱及Zeta电位等研究了氧化共沉淀方法制备掺锑纳米SnO2粉料时表面活性剂聚乙二醇(PEG-6000)的作用机理. 采用沉降实验、粘度测定等手段，确定了表面活性剂适宜的使用量. 结果表明，聚乙二醇的防团聚性能是通过在纳米粉体的前驱体上吸附、进而主要通过空间位阻稳定机制进行作用的. 其使用量的多少直接影响粉体的粒度大小. 制备出了团聚程度轻、分散性良好的纳米掺锑SnO2粉料.

关键词: SnO2, 纳米粉体, 聚乙二醇, 团聚

Abstract: The function and the mechanism of additive PEG-6000 in the preparation process of Sb-doped SnO2 nano-powder via oxidative-coprecipitation have been studied by means of particle size analysis, IR spectrum, Zeta potential measurement, and sedimentation experiments. The suitable additive amount (0.8%～1.2%, ω) has been determined by means of sedimentation experiments, and viscosity measurements. The experimental results show that agglomeration of precursor is reduced by the steric effect of PEG-6000 adsorbing on it, and the powder product quality is greatly influenced by the added amount of PEG-6000. The well-dispersed Sb-doped SnO2 nano-powder can be obtained by adding suitable amount of PEG-6000 (0.8%～1.2%, ω). This process can be applied in the preparation of other nano-powders with precipitation method as well.

Key words: SnO2, nanometer powder, PEG, agglomeration