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本工作利用循环伏安和计时电位等电化学测量方法研究了镧系元素Eu(Ⅲ)Eu3+和锕系元素U(Ⅵ)分别在亲水性离子液体——氯化1-丁基-3-甲基咪唑([BMIM]Cl)中的电极过程。实验表明,以玻碳电极为工作电极时,[BMIM]Cl的电化学窗口为-1.7～0.80V(vs.Ag/AgCl)。在离子液体[BMIM]Cl中,Eu3+通过转移1个电子被还原为Eu2+,此电极反应受电荷迁移和物质扩散共同控制。温度从55℃升至75℃时,Eu3+在[BMIM]Cl中的扩散系数D从3.75×10-9cm2/s变为1.32×10-8cm2/s,该反应活
In this work, cyclic voltammetry and chronopotentiometry were used to study the effect of lanthanide Eu (Ⅲ) Eu3 + and actinide U (Ⅵ) Electrode process in methyl imidazole ([BMIM] Cl). The experimental results show that the electrochemical window of [BMIM] Cl is -1.7 ~ 0.80V (vs. Ag / AgCl) when the glassy carbon electrode is the working electrode. In ionic liquid [BMIM] Cl, Eu3 + is reduced to Eu2 + by transferring one electron, and the electrode reaction is jointly controlled by charge transfer and material diffusion. The diffusion coefficient D of Eu3 + in [BMIM] Cl changes from 3.75 × 10 -9 cm 2 / s to 1.32 × 10 -8 cm 2 / s when the temperature is raised from 55 ° C. to 75 ° C. This reaction