Synthesis of nanocrystalline SnO2 by a selective dissolution of copper alloy dross

摘要

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.