Collect. Czech. Chem. Commun.
1991, 56, 140-151
https://doi.org/10.1135/cccc19910140
Catalytic effects in the electrochemical reactions involving nickel and cysteine. Voltammetric studies
Florinel Gabriel Banica and Elena Diacu
Polytechnic Institute of Bucharest, Faculty of Industrial Chemistry, Spl. Independentei 313, Bucharest, Romania
Abstract
The electrode reactions in the nickel-cysteine system at pH-values around 7 were studied by cyclic voltammetry on the hanging mercury drop electrode. The following processes are induced by cysteine:1) the catalytic reduction of the nickel ion; 2) the anodic dissolution of the nickel amalgam by a catalytic mechanism; 3) the catalytic evolution of hydrogen. Some analogies with the behaviour of the nickel center in hydrogenase are suggested.
