Redox behavior of Ce(IV)/Ce(III) in the presence of organic acids

Suzuki, Yoshinori; Nankawa, Takuya ; Onuki, Toshihiko

We investigated the redox behavior of Ce(IV)/Ce(III) in the presence of nitrilotriacetic acid (NTA) or Desferrioxamine B (DFO) by cyclic voltammetry and column electrolysis. In the presence of these organic acids, the redox potentials of Ce(IV)/Ce(III) was lower than that of the standard redox potential, suggesting that Ce(IV) was stabilized more than Ce(III) by complex formation. The redox reactions of Ce-DFO complex bellow and above pH 11 were different.