Electrochemical Properties of Uranium in Acetonitrile and ββ′ Oxydipropionitrile: Kinetics and Electrodeposition

Immobilization of Actinides by Electropolymerization of Acrylonitrile : Application to the Preparation of Alpha Spectroscopy Sources

“…-2.0 V in AN. As demonstrated in a previous paper [5], U 4+ is reduced to the metallic state at this potential and U0 2 + is reduced to U0 2 (s) so, when a cathodic scan down to -2.0 V is applied to a solution containing both U 4+ -or U0 2 + -and acrylonitrile, the polymer growth will incorporate the uranium reduced species. As Np 4+ has a behaviour similar to that of U 4+ in both AN and DMF [6], insertion of this actinide in the polymer also occurs.…”

Kinetics of Electrode Processes in Fused Salts and Organic Media Containing Thorium, Uranium or Neptunium Ions: Application to Concentrated Solutions

“…The experimental values of a (or a') when only one electron is involved are listed in column Τ (Table 1); they are compared with the values of the same parameters calculated from Sampled Polarography (SP) experiments when available. These data have been obtained in dilute solutions (5.10 -3 M to 2.5 10" 2 M) in previous work [1][2][3][4]. The SP has been described in this Journal [3].…”

“…These data have been obtained in dilute solutions (5.10 -3 M to 2.5 10" 2 M) in previous work [1][2][3][4]. The SP has been described in this Journal [3]. In Table 1, we also report the dielectric constant (ε) together with the Gutmann Donor Number (DN) that corresponds to the solvating power of each solvent.…”

“…In recent papers, we have reported fundamental electrochemical properties of the first actinides (Th, U, Np) in various organic media [1][2][3][4], These properties were deduced from transient electrochemical measurements such as cyclic voltammetry (CV), chronoamperometry (CA) or sampled polarography (SP) and the experiments were carried out in dilute solutions as to fit the conditions required to validate the basic equations involved in these methods.…”

Controlled exchange of metallic cations by polypyrrole-based resins

“…This salt precipitation is frequently observed when a metal is electrochemically deposited from organic solutions of chloride salts [11]. Fixation of Cs + as counter-ion of the polymer results in an excess of Cl − anions in the very close vicinity of the electrode leading to the insolubility and precipitation of CsCl on the electrode surface.…”