Articles
  • Synthesis of nanocrystalline SnO2 by a selective dissolution of copper alloy dross
  • Jung-Il Leea, Joon Hwangb, Chang Woo Hongc, and Jeong Ho Ryua,*
  • a Department of Materials Science and Engineering, Korea National University of Transportation, 50 Daehak-ro, Chungju, Chungbuk 380-702, Korea b Department of Aeronautical and Mechanical Design Engineering, Korea National University of Transportation, Chungju, Chungbuk 380-702, Korea c Department of Civil Engineering, Korea National University of Transportation, Chungju, Chungbuk 380-702, Korea
Abstract
In this report, preliminary study on concentration and separation of tin (Sn) from copper alloy dross using selective dissolution method was performed. The tin in the copper alloy dross did not dissolve in an aqueous nitric acid solution which could allow the concentration/separation of tin from the copper alloy dross. Precipitation of tin as H2SnO3 (metastannic acid) occurred in the solution and transformed to nanocrystalline tin dioxide (SnO2) after drying process. The dried sample was heat-treated at low temperature and its phase characteristics, surface morphology and chemical composition were investigated.

Keywords: Nanocrystalline SnO2, Selective dissolution, Copper alloy dross.

This Article

  • 2015; 16(4): 428-431

    Published on Aug 31, 2015