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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 3    June 2005

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Preparation of antimony-doped nanoparticles by hydrothermal method
JIANG Ming-xi(江名喜)1, YANG Tian-zu(杨天足)1, GU Ying-ying(古映莹)1,
 DU Zuo-juan(杜作娟)1, LIU Jian-ling(刘建玲)2

1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; 
2. College of Chemistry and Chemical Engineering, Hunan University, 
Changsha 410082, China

Abstract:Antimony-doped tin oxide(ATO) nanoparticles were prepared by the mild hydrothermal method at 200℃ using sodium stannate, antimony oxide, sodium hydroxide and sulfuric acid as the starting materials. The doped powders were examined by differential thermal analysis(DTA), X-ray diffractometry(XRD) and transmission electron microscopy(TEM). The doping levels of antimony were determined by volumetric method and iodimetry. The results show that antimony is incorporated into the crystal lattice of tin oxide and the doping levels of antimony in the resulting powders are 2.4%, 4.3% and 5.1%(molar fraction). The mean particle size of ATO nanoparticles is in the range of 25-30nm. The effects of antimony doping level on the crystalline size and crystallinity were also discussed.

 

Key words: hydrothermal process; nanoparticle; antimony; doping; tin oxide

ISSN 1672-7029
CN 43-1423/U

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