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Citation: LI Qing-Shan, ZHANG Jin-Chao, . Influences of the Coprecipitation Conditions on the Particle Size and Conductive Property of Nanometer-Sized Sb/SnO₂ Powder[J]. Chinese Journal of Applied Chemistry, ;2002, 19(2): 163-167. shu

Influences of the Coprecipitation Conditions on the Particle Size and Conductive Property of Nanometer-Sized Sb/SnO₂ Powder

LI Qing-Shan ^, ,
ZHANG Jin-Chao ,

1.
Department of Science and Engineering of Material, East China University of Science and Technology, Shanghai 200237

Corresponding author: LI Qing-Shan,
Received Date: 30 June 2001
Available Online: 18 October 2001

Nanometer-sized SnO₂ powders were prepa red by a chemical coprecipitation method using SnCl₄·5H₂O and SbCl₃ as precursors. The characteristics of the powders were investigated by DSC-TG, XRD and TEM. The influences of coprecipitation temperature and pH value on the particle size and powder resistance have been investig ated. The results indicate that the powders with a homogenous particle-size distribution and a good dispersivity are tetragonal rutile-type antimony-doped tin oxide polycrystalline particles. The particle size and powder resistance are insensitive to the coprecipitation temperature. The proper coprecipitation temperature is about 45~70℃. The particle size reaches a maximum at pH=4~6 whereas the corresponding resistance of the sample is smaller. The optimal range of pH value is 3~5, when both particle size and electrical property are in consideration.
- conductive nanometer-sized Sb/SnO₂ powder,
- coprecipitation temperature,
- pH value,
- property
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Influences of the Coprecipitation Conditions on the Particle Size and Conductive Property of Nanometer-Sized Sb/SnO₂ Powder