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- W841417803 abstract "The electrocatalytic reduction of oxygen is investigated by cyclic voltammetry and chronoamperometry at glassy carbon electrode and carbon microelectrode coated with a variety of cobalt phenylprophyrins in various pH solutions. Oxygen reduction catalyzed by the monomeric porphyrin Co(Ⅱ)-TPP mainly occurs through the 2e reduction pathway resulting in the formation of hydrogen peroxide whereas electrocatalytic process carried out 4e reduction pathway of oxygen to HO at the electrodes coated with cofacial bis-cobalt phenylporphyrins in acidic solution. The electrocatalytic reduction of oxygen is irreversible and diffusion controlled. The reduction potentials of oxygen in various pH solutions have a straight line from pH 4 to pH 13, but level off in strong acidic solution. The reduction potentials of oxygen shift to positive potential more 400 mV at the electrode coated with monomer Co-TPP compound than bare glassy carbon electrode while 750 mV at the electrode coated with dimer Co-TPP compound." @default.
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- W841417803 date "1993-01-01" @default.
- W841417803 modified "2023-09-24" @default.
- W841417803 title "The Electrocatalytic Reduction of Oxygen by Bis-Cobalt Phenylporphyrins in Various pH Solutions" @default.
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