skip to main content

Title: Electrochemical oxidation of 243Am(III) in nitric acid by a terpyridyl-derivatized electrode

A high surface area, tin-doped indium oxide electrode surface-derivatized with a terpyridine ligand has been applied to the oxidation of trivalent americium to Am(V) and Am(VI) in nitric acid. Potentials as low as 1.8 V vs. the saturated calomel electrode are used, 0.7 V lower than the 2.6 V potential for one-electron oxidation of Am(III) to Am(IV) in 1 M acid. This simple electrochemical procedure provides, for the first time, a method for accessing the higher oxidation states of Am in non-complexing media for developing the coordination chemistries of Am(V) and Am(VI) and, more importantly, for separation of americium from nuclear waste streams.
; ; ;
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0036-8075
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Science; Journal Volume: 350; Journal Issue: 6261
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
Country of Publication:
United States
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; americium, electrochemistry, minor actinides, oxidation