Direct Electrodeposition of UO2 from Uranyl Bis(trifluoromethanesulfonyl)imide Dissolved in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Room Temperature Ionic Liquid System [electronic resource].
- Washington, D.C. : United States. Office of the Assistant Secretary for Nuclear Energy, 2013.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 630-638 : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory
United States. Office of the Assistant Secretary for Nuclear Energy
United States. Department of Energy. Office of Basic Energy Sciences
United States. Department of Energy. Office of Scientific and Technical Information
- Our study demonstrates a direct electrodeposition of UO<sub>2</sub> at a Pt cathode from a solution of uranyl bis(trifluoromethanesulfonyl)imide [UO<sub>2</sub>(NTf<sub>2</sub>)<sub>2</sub>)] in a bulk room-temperature ionic liquid (RTIL), 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (EMIM<sup>+</sup>NTf<sub>2</sub><sup>–</sup>). Cyclic voltammetry (CV) studies revealed two reduction waves corresponding to the conversion of uranium(VI) to uranium(IV), and a mechanism for the overall electroreduction is proposed. A controlled-potential experiment was performed, holding the reduction potential at–1.0 V for 24 h to obtain a brown-black deposit of UO<sub>2</sub> on the Pt cathode. The Faradaic efficiency of the reduction process was determined to be >80%. The UO<sub>2</sub>deposit was characterized by powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).
- Published through SciTech Connect.
Electrochimica Acta 118 ISSN 0013-4686 AM
John W. Freiderich; Eranda P. Wanigasekara; Xiao-Guang Sun; Roberta Ann Meisner; Harry M. Meyer, III; Huimin Luo; Laetitia Helene Delmau; Sheng Dai; Bruce A Moyer.
- Funding Information:
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