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Preparation of AgSnO2 composite powders by hydrothermal process

  • Yang Tian-zu  (杨天足)
  • Du Zuo-juan  (杜作娟)Email author
  • Gu Ying-ying  (古映莹)
  • Qiu Xiao-yong  (邱晓勇)
  • Jiang Ming-xi  (江名喜)
Article

Abstract

Silver-tin oxide powders were synthesized by the hydrothermal method with Ag(NH3)2+ solution and Na2SnO3 solution as raw materials and Na2SO3 as reductant. The precipitation conditions of Na2SnO3 solution and the reduction conditions of Ag(NH3)2+ were also investigated. The powders prepared were characterized by differential thermal analysis (DTA), X-ray diffraction analysis (XRD), scanning electron microscope (SEM) and energy spectrum analysis. The results show that pH value of the solution is a key parameter in the formation of Sn(OH)4 precipitate and the reduction reaction of Ag(NH3)2+ can release H+ ions, which results in synchronous precipitation of Sn(OH)62− as Sn(OH)4. The reduction of Ag(NH3)2+ and precipitation of Na2SnO3 occur simultaneously and the coprecipitation of silver and tin oxide is reached by the hydrothermal method. The silver-tin oxide composite powders have mainly flake shape of about 0.3 μm in thickness and there exists homogeneous distribution of tin oxide and silver in the powder synthesized.

Key words

silver-tin oxide powder hydrothermal method flake structure coprecipitation 

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Copyright information

© Published by: Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Yang Tian-zu  (杨天足)
    • 1
  • Du Zuo-juan  (杜作娟)
    • 1
    Email author
  • Gu Ying-ying  (古映莹)
    • 2
  • Qiu Xiao-yong  (邱晓勇)
    • 2
  • Jiang Ming-xi  (江名喜)
    • 1
  1. 1.School of Metallurgical Science and EngineeringCentral South UniversityChangshaChina
  2. 2.School of Chemistry and Chemical EngineeringCentral South UniversityChangshaChina

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