Yoo, Kyoungkeun and Lee, Kwang Seok and Jha, Manis K and Lee, Jae-chun and Cho, Kuk (2016) Preparation of Nano-Sized Tin Oxide Powder from Waste Pb-Free Solder by Direct Nitric Acid Leaching. Journal of Nano-science and Nanotechnology, 16 (IF-1.483). pp. 11238-11241.
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Nano-sized tin oxide particles were prepared by nitric acid (HNO3leaching 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.
|Uncontrolled Keywords:||Tin Oxide, Pb-Free Solder, Nitric Acid Leaching, Nano-Sized Precipitate Particle.|
|Divisions:||Material Science and Technology|
|Deposited By:||Sahu A K|
|Deposited On:||17 Nov 2017 16:21|
|Last Modified:||18 Jun 2018 11:47|
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