Measurement of the effective capacitance of solutions containing nanoscale uranyl peroxide cage clusters (U-60) reveals cluster effects

作者：Liu Yi; Szymanowski Jennifer E. S.; Sigmon Ginger E.; Morris David E.; Hixon Amy E.^*; Migliori Albert; Burns Peter C.

来源：Journal of Radioanalytical and Nuclear Chemistry, 2018, 315(2): 341-346.

DOI：10.1007/s10967-017-5659-2

• Uranyl peroxide nanoclusters
• Cyclic voltammetry
• Effective capacitance
• Cation dissociation
• Electrical double layer

The effective capacitance of an aqueous solution containing the nanoscale uranyl peroxide cage cluster U-60 (Li48K12[UO2(O-2)(OH)](60)(H2O) (n) , n ae 310) was measured using cyclic voltammetry. The potential window (50-90 mV) for the measurements precluded changes to the oxidation state of U(VI) in the system. The effective capacitance for solutions containing 0.5-14.0 g L-1 U-60 exhibited a dependence on cluster concentration caused by the dissociation of Li+ and K+ counterions from the clusters. The effective capacitance of U-60 cluster solutions and salt solutions of KCl and LiCl were compared.

• 出版日期2018-2
• 单位Los Alamos