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采用伏安法研究了Sn(Ⅱ)和Sb(Ⅲ)在[EMIm]BF4离子液体中的电化学还原过程,并采用SEM和EDS对电沉积产物进行分析。结果表明,Sn(Ⅱ)和Sb(Ⅲ)在25℃的[EMIm]BF4离子液体中的电化学还原为不可逆过程;Stokes-Einstein乘积分别为7.27×10-10、2.35×10-10g.cm/(s2.K);锡、锑在[EMIm]BF4离子液体中可以同时被沉积于铂电极表面,说明在[EMIm]BF4离子液体中制备Sn-Sb合金是可行的。
The electrochemical reduction of Sn (Ⅱ) and Sb (Ⅲ) in [EMIm] BF4 ionic liquids was investigated by voltammetry. The electrodeposited products were analyzed by SEM and EDS. The results show that the electrochemical reduction of Sn (Ⅱ) and Sb (Ⅲ) in [EMIm] BF4 ionic liquid at 25 ℃ is an irreversible process. The Stokes-Einstein products are 7.27 × 10-10 and 2.35 × 10-10g.cm /(s2.K). Tin and antimony can be simultaneously deposited on the surface of platinum electrode in [EMIm] BF4 ionic liquid, which shows that it is feasible to prepare Sn-Sb alloy in [EMIm] BF4 ionic liquid.