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

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

doi:10.1007/s10967-017-5659-2

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

Yi Liu
, Jennifer E.S. Szymanowski
, Ginger E. Sigmon
, David E. Morris
, Amy E. Hixon
, Albert Migliori
, Peter C. Burns

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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.

Original language	English
Pages (from-to)	341-346
Number of pages	6
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	315
Issue number	2
DOIs	https://doi.org/10.1007/s10967-017-5659-2
State	Published - Feb 1 2018
Externally published	Yes

Funding

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.

Keywords

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

Access to Document

10.1007/s10967-017-5659-2

Cite this

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

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.",

keywords = "Cation dissociation, Cyclic voltammetry, Effective capacitance, Electrical double layer, Uranyl peroxide nanoclusters",

author = "Yi Liu and Szymanowski, \{Jennifer E.S.\} and Sigmon, \{Ginger E.\} and Morris, \{David E.\} and Hixon, \{Amy E.\} and Albert Migliori and Burns, \{Peter C.\}",

note = "Publisher Copyright: {\textcopyright} 2017, Akad{\'e}miai Kiad{\'o}, Budapest, Hungary.",

year = "2018",

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doi = "10.1007/s10967-017-5659-2",

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AU - Liu, Yi

AU - Szymanowski, Jennifer E.S.

AU - Sigmon, Ginger E.

AU - Morris, David E.

AU - Hixon, Amy E.

AU - Migliori, Albert

AU - Burns, Peter C.

PY - 2018/2/1

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AB - 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.

KW - Cation dissociation

KW - Cyclic voltammetry

KW - Effective capacitance

KW - Electrical double layer

KW - Uranyl peroxide nanoclusters

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