Synthesis of Tin Nanoparticles by Pulse Discharge in Water and Aqueous Gelatin Solution

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<p>High-voltage pulse discharges were generated between underwater two metallic Tin (Sn) wires in order to synthesize nanoparticles. Nanoparticles were synthesized in pure water or aqueous gelatin solution. In pure water, Sn and SnO2 particles of approximately 5 nm in diameter were synthesized. However, synthetic particles in pure water had a problem of aggregation. The influence of gelatin solution on the particle size and dispersibility of the synthetic particles was investigated. In 10 mg/L gelatin aqueous solution, metallic Sn particles of approximately 40 to 400 nm in diameter were synthesized and were dispersing separately. From the peak width of X-ray diffraction (XRD) spectrum, the particle size was estimated using the Scherrer’s equation. As a result, the minimum size was approximately 20 nm at 2 mg/L of aqueous gelatin solution.</p>

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