Electrochemical behaviour of uranium at a tripolyphosphate modified ITO electrode
- Florida State University, Tallahassee, FL (United States)
UO22+ binds to the surface of a tripolyphosphate modified mesoporous indium tin-doped oxide electrode (nanoITO|P3). Electrochemical studies reveal that nITO|P3 electrodes catalyze the 2-electron interconversion between UO22+ and U4+ with the P3-ligand assisting in the rate-limiting proton-coupled reduction of U(V) to U(IV), based on the kinetic isotope effect (1.8). Product composition between nITO|P3(U4+) and surface adsorbed UO2 can be controlled by adjusting the proton concentration and/or scan rate in voltammograms. Furthermore these studies with uranium suggest that nITO|P3 electrodes are good candidates for redox transformations with other actinides including neptunium, plutonium, and americium.
- Research Organization:
- Florida International University (FIU), Miami, FL (United States); Florida State Univ., Tallahassee, FL (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- NE0008539; SC0016568
- OSTI ID:
- 1978750
- Alternate ID(s):
- OSTI ID: 1823499
- Journal Information:
- ChemComm, Vol. 57, Issue 83; ISSN 1359-7345
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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