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Catalytic effects in the electrochemical reactions involving nickel and cysteine. Voltammetric studies
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1991
Year
Catalytic EffectsNickel CenterChemical EngineeringEngineeringBiochemistryVoltammetric StudiesNatural SciencesMolecular ElectrochemistrySurface ElectrochemistryElectrosynthesisNickel IonCatalysisNickel-cysteine SystemChemistryHydrogenElectrochemical ReactionsElectrode Reaction MechanismElectrochemistry
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.