Electrochemical behaivour of uranyl(VI) ion in different non-aqueous solvents |
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| Affiliation: | 1. State Key Laboratory of Radiation Medicine and Protection, School of Radiological and Interdisciplinary Sciences (RAD−X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China;2. Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;1. Radiation Oncology Associates, Richmond, Virginia;2. Department of Radiation Oncology and Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina;1. Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona, 17003 Girona, Spain;2. Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain;1. Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, OH, 45433, USA;2. KBRwyle, Dayton, OH, 45431, USA;1. State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, China;2. Research Center for Eco-Environmental Engineering Dongguan University of Technology, Dongguan, 523808, China |
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| Abstract: | The electrochemical reduction of uranyl(VI) ion at platinum and/or mercury microelectrodes has been studied in different non-aqueous media by voltammetric techniques (cyclic voltammetry, de voltammetry at elactrodes with periodical renewal of diffusion layer, chronoamperometry, controlled-potential coulometry). Reproducible voltammetric responses have been obtained in dimethyl sulfoxide, N,N-dimethylformamide, acetic anhydride, pyridine, morpholine and ethylenediamine solvents. The mechanistic aspects involved have been studied. the solvation process of uranyl(VI) ion in the various solvents has been discussed in terms of dependence of the redox potential for the U(VI)/U(V) couple on the electron—pair donor properties of the solvents. |
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