Surface electrochemistry of the oxidation of glycine at Pt

摘要: The electrochemical oxidation of glycine at a Pt electrode was investigated in aqueous solutions pH 1 and 13 using steady-state current–potential measurements, cyclic voltammetry, open circuit potential decay. capacitance behaviour the high Tafel slopes suggest production free radicals surface accompanied by second reaction involving loss CO2 which is rate determining step. In electro-oxidation glycine, it appears that adsorbed intermediate species either hydrolyzed anodically to formaldehyde ammonia, or oxidized carbonium ion subsequently ammonia solution. This differs from dimerization process typical radical reactions associated with Kolbe mechanism. Keywords: amino acid, oxidation, electrochemistry,