Electrocatalytic activity of N,N′,N″,N‴-tetramethyl-tetra-3,4-pyridoporphyrazinocobalt(II) adsorbed on a graphite electrode towards the oxidation of hydrazine and hydroxylamine

Abstract

The complex N,N′,N″,N‴-tetramethyl-tetra-3,4-pyridoporphyrazinocobalt(II) ([Co(II)Tmtppa] 4+) irreversibly adsorbed on a graphite electrode displays electrocatalytic activity towards the oxidation of both hydrazine and hydroxylamine. The kinetics of the electrocatalytic four-electron oxidation of NH 2NH 2 and two-electron oxidation of NH 2OH are examined using cyclic voltammetric and rotating disk electrode methods, and the corresponding kinetic parameters are obtained. The possible application of the [Co(II)Tmtppa] 4+ modified electrode in sensing NH 2NH 2 and NH 2OH is also discussed in this paper.