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    Preparation of nano-sized tin oxide powder from waste Pb-free solder by direct nitric acid leaching

    Access Status
    Fulltext not available
    Authors
    Yoo, Kyoungkeun
    Lee, K.
    Jha, M.
    Lee, J.
    Cho, K.
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Yoo, K. and Lee, K. and Jha, M. and Lee, J. and Cho, K. 2016. Preparation of nano-sized tin oxide powder from waste Pb-free solder by direct nitric acid leaching. Journal of Nanoscience and Nanotechnology. 16 (11): pp. 11238-11241.
    Source Title
    Journal of Nanoscience and Nanotechnology
    DOI
    10.1166/jnn.2016.13485
    ISSN
    1533-4880
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/54217
    Collection
    • Curtin Research Publications
    Abstract

    Nano-sized tin oxide particles were prepared by nitric acid (HNO3) leaching of Pb-free solder containing tin (Sn), silver (Ag), and copper (Cu) as main components. During the nitric acid leaching, Ag and Cu were dissolved whereas Sn was not detected in the leach solution and the leaching efficiencies of Ag and Cu increased with increasing temperature and HNO3 concentration. The precipitates were analyzed with X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscope (TEM). The tin precipitate was determined to be tin oxide by XRD and nano-sized particles were observed in the SEM and TEM images. The larger particle size was observed in the leaching condition of slow leaching rate. The purity and particle size of tin precipitate, obtained from the leaching test performed in the 2 mol/L HNO3 solution at 90°C and 400 rpm, were 99.986% and 6.03 nm, respectively.

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