Electrocatalytic Oxidation of Vitamin B6 on a Chemically Modified Electrode
نویسندگان
چکیده
The electrocatalytic oxidation of vitamin B6 (pyridoxine hydrochloride) was demonstrated on a Nafion/lead ruthenate pyrochlore modified electrode (designated as NCME) by cyclic voltammetry. The catalytic activity of vitamin B6 was explored in terms of the higher oxidation state of ruthenium species, i.e., Py-Ru/Ru in the pyrochlore network (Py). The mediated mechanism was derived by Michaelis-Menten kinetics. The calculated kinetics values by direct Michaelis-Menten method are Michaelis-Menten rate constant (Km) = 4.05 mmol dm, catalytic rate constant (kc) = 2.05×10 s, and heterogeneous electrochemical rate constant (k’ME) = 4.09×10 cm s.
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