Direct Electrodeposition of UO2 from Uranyl Bis(trifluoromethanesulfonyl)imide Dissolved in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Room Temperature Ionic Liquid System
Abstract
Our study demonstrates a direct electrodeposition of UO2 at a Pt cathode from a solution of uranyl bis(trifluoromethanesulfonyl)imide [UO2(NTf2)2)] in a bulk room-temperature ionic liquid (RTIL), 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (EMIM+NTf2–). 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 UO2 on the Pt cathode. The Faradaic efficiency of the reduction process was determined to be >80%. The UO2deposit was characterized by powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy and Transportation Science Division
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1115345
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Electrochimica Acta
- Additional Journal Information:
- Journal Volume: 118; Journal ID: ISSN 0013-4686
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Uranium Dioxide; Ionic Liquids; Electrodeposition
Citation Formats
Freiderich, John W., Wanigasekara, Eranda P., Sun, Xiao-Guang, Meisner, Roberta Ann, Meyer, III, Harry M., Luo, Huimin, Delmau, Laetitia Helene, Dai, Sheng, and Moyer, Bruce A. Direct Electrodeposition of UO2 from Uranyl Bis(trifluoromethanesulfonyl)imide Dissolved in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Room Temperature Ionic Liquid System. United States: N. p., 2013.
Web. doi:10.1016/j.electacta.2013.10.187.
Freiderich, John W., Wanigasekara, Eranda P., Sun, Xiao-Guang, Meisner, Roberta Ann, Meyer, III, Harry M., Luo, Huimin, Delmau, Laetitia Helene, Dai, Sheng, & Moyer, Bruce A. Direct Electrodeposition of UO2 from Uranyl Bis(trifluoromethanesulfonyl)imide Dissolved in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Room Temperature Ionic Liquid System. United States. https://doi.org/10.1016/j.electacta.2013.10.187
Freiderich, John W., Wanigasekara, Eranda P., Sun, Xiao-Guang, Meisner, Roberta Ann, Meyer, III, Harry M., Luo, Huimin, Delmau, Laetitia Helene, Dai, Sheng, and Moyer, Bruce A. 2013.
"Direct Electrodeposition of UO2 from Uranyl Bis(trifluoromethanesulfonyl)imide Dissolved in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Room Temperature Ionic Liquid System". United States. https://doi.org/10.1016/j.electacta.2013.10.187. https://www.osti.gov/servlets/purl/1115345.
@article{osti_1115345,
title = {Direct Electrodeposition of UO2 from Uranyl Bis(trifluoromethanesulfonyl)imide Dissolved in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Room Temperature Ionic Liquid System},
author = {Freiderich, John W. and Wanigasekara, Eranda P. and Sun, Xiao-Guang and Meisner, Roberta Ann and Meyer, III, Harry M. and Luo, Huimin and Delmau, Laetitia Helene and Dai, Sheng and Moyer, Bruce A},
abstractNote = {Our study demonstrates a direct electrodeposition of UO2 at a Pt cathode from a solution of uranyl bis(trifluoromethanesulfonyl)imide [UO2(NTf2)2)] in a bulk room-temperature ionic liquid (RTIL), 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (EMIM+NTf2–). 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 UO2 on the Pt cathode. The Faradaic efficiency of the reduction process was determined to be >80%. The UO2deposit was characterized by powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).},
doi = {10.1016/j.electacta.2013.10.187},
url = {https://www.osti.gov/biblio/1115345},
journal = {Electrochimica Acta},
issn = {0013-4686},
number = ,
volume = 118,
place = {United States},
year = {Mon Nov 11 00:00:00 EST 2013},
month = {Mon Nov 11 00:00:00 EST 2013}
}
Web of Science