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《Materials Protection》 2005-03
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Preparation of Stibium-Doped Conductive Tin Dioxide Nanocrystalline by High Temperature Burning

LIANG Hong bo~1, ZHANG Xue jun~(1,3), GAN Fu xing~(1,2) (1. College of Resources and Environmental Science, Wuhan University, Wuhan 430072; 2. State Key Laboratory of Metal Corrosion and Protection, Chinese Academy of Sciences, Shenyang 110015; 3. Provincial Key Laboratory for Fermentation Engineering and Bio pharmacy, Guizhou University of Technology, Guiyang 550003, China)  
With a view to the promising application of Sb doped SnO_2 superfine powders, especially the nanocrystalline powders in transparent conductive films and conductive coatings, SnCl_4·5H_2O and SbCl_3 were used to prepare Sb doped SnO_2 nanocrystalline. Thus the dopant stannic hydroxide was synthesized in the organic phase using precipitating reaction, by properly controlling the pH value. Then an anion exchange resin was used to remove the Cl~- ions using non aqueous Cl~- ion removal method so as to allow the generation of the Sb doped SnO_2 nanocrystalline powders. The resulting Sb doped SnO_2 nanocrystalline was characterized by means of X ray diffraction and transmission electron microscopy. And the effects of heat treatment temperature and doping Sb concentration on the grain size and conductance of the target nanocrystalline powder were investigated. Results showed that the prepared Sn doped SnO_2 nanocrystalline powders had evenly distributed size and good dispersion. The chloride ions were completely removed using the non-aqueous anion exchange route, which contributed to increasing the stability of the precipitates and reduce the preparation time and solvent amount. Moreover, the recovery rate of the product was above 95%.
【CateGory Index】: TB383
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