발간논문

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Vol.48, No.12, 1084 ~ 1090, 2010
Title
Formation Mechanism of SnO Plate
김병렬 Byeung Ryeul Kim , 박채민 Chae Min Park , 이우진 Woo Jin Lee , 김인수 In Soo Kim
Abstract
This study elucidates the formation mechanism of SnO plate observed during the precipitation reaction of a SnCl2 aqueous solution. Sn21Cl16(OH)14O6 and Sn6O4(OH)4 precipitates was formed at pH=3~5 and at pH=11, respectively. When the pH was in the range of 11.5~12.5, the Sn6O4(OH)4 precipitates dissolved into HSnO2 - [Sn6O4(OH)4+4OH-=6HSnO2 -+2H+] and dissolved HSnO2 - ions reprecipitated to SnO plate [HSnO2 -+H+=SnO+H2O]. The Sn6O4(OH)4 precipitates completely transformed into SnO plate through a repeated process of dissolution-precipitation in the range of pH=11.5~12.5.
Key Words
oxide, chemical synthesis, precipitates, X-ray diffraction, reaction mechanism
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