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中文摘要：
研究了U（Ⅵ）在疏水性离子液体双三氟甲基磺酰亚胺化三甲基丙基季铵盐（N1113NTf2）中的电化学氧化还原过程。利用循环伏安法,确定了U（Ⅵ）在离子液体中的如下还原过程：大量U（Ⅵ）直接在电极表面还原为U（Ⅳ）,电极反应受电荷迁移和物质扩散共同控制。随后,U（Ⅳ）在离子液体中继续被还原生成U（Ⅲ）。在低浓度下电极反应U（Ⅵ）→U（Ⅲ）的过程是准可逆过程,但随着U（Ⅵ）浓度增大,此反应转变为不可逆过程。利用恒电位沉积方法,实验得到了具有不同形貌的沉积产物,X射线衍射（XRD）分析表明此沉积产物为UO2。
英文摘要：
Electrochemical behaviors of U（Ⅵ） with different concentrations in propyltrimethylammonium bis（trifluoromethyl sulfonyl） imide（N1113 NTf2 ） hydrophobie ionic liquid were investigated by cyclic voltammetry （CV）. The electrochemical reduction of U（Ⅵ） in NlnaNTf2 was identified to be reduced to U（Ⅵ） in the first step, which is controlled by not only diffusion but also charge transfer kinetic. Then, U（Ⅵ） was further reduced to U（Ⅲ）. The product of potentiostatic electrolysis deposition on the surface of stainless steel electrode was characterized by scanning electron microscopy（SEM） and X-ray diffraction（XRD） method, which show that the deposit is UO2.
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