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Measurement of the effective capacitance of solutions containing nanoscale uranyl peroxide cage clusters (U60) reveals cluster effects

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Abstract

The effective capacitance of an aqueous solution containing the nanoscale uranyl peroxide cage cluster U60 (Li48K12[UO2(O2)(OH)]60(H2O) n , n ≈ 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 U60 exhibited a dependence on cluster concentration caused by the dissociation of Li+ and K+ counterions from the clusters. The effective capacitance of U60 cluster solutions and salt solutions of KCl and LiCl were compared.

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Acknowledgements

We thank instrument support from the Center for Environmental Science & Technology (CEST) and the Mass Spectrometry and Proteomics Facility at the University of Notre Dame. This material is based on work supported as part of the Material Science of Actinides, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under award number DE-SC0001089.

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Authors and Affiliations

  1. Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA

    Yi Liu & Peter C. Burns

  2. Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA

    Jennifer E. S. Szymanowski, Ginger E. Sigmon, Amy E. Hixon & Peter C. Burns

  3. Los Alamos National Laboratory, Los Alamos, NM, 87544, USA

    David E. Morris & Albert Migliori

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  1. Yi Liu
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  2. Jennifer E. S. Szymanowski
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  3. Ginger E. Sigmon
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  4. David E. Morris
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  5. Amy E. Hixon
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  7. Peter C. Burns
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Correspondence to Amy E. Hixon.

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Liu, Y., Szymanowski, J.E.S., Sigmon, G.E. et al. Measurement of the effective capacitance of solutions containing nanoscale uranyl peroxide cage clusters (U60) reveals cluster effects. J Radioanal Nucl Chem 315, 341–346 (2018). https://doi.org/10.1007/s10967-017-5659-2

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  • DOI: https://doi.org/10.1007/s10967-017-5659-2

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