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摘要
In this paper, tin sulfide-tin dioxide nanocomposites were synthesized by the pulsed-current electrochemical method on the surface of tin substrate in Na2S solution. To obtain uniform morphology, narrowest size distribution, and the best composition of sample, the effects of experimental variables such as sodium sulfide concentration, types and concentration of synthesis additives, pH, bath temperatures, pulse frequency, and pulse height (current amount) are investigated and optimized. The prepared samples are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) techniques. The optimized conditions include 92 mA.cm(-2) current density, 13 Hz pulse frequency, 0.008 M sodium sulfide, pH 12.5, and 25 degrees C electrocrystallization temperature. In optimum conditions, uniform SnS-SnO2 nanocomposite in orthothombic nanorod form with 30 nm average diameter and 200 nm average length are synthesized.
- 出版日期2013-10
