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- W2026602178 abstract "In this paper, five types of chemically modified electrode (CMEs) prepared with the deposition of platinum particles on various surfaces of glassy carbon (GC) modified with cobalt porphyrin and Nafion® solution are characterized using the electron scanning microscope (SEM). Their activities in the four-electron reduction of dioxygen to water on the basis of their electrochemical data from cyclic voltammetric and rotating ring-disk electrode (RRDE) experiments are examined and compared. Platinum particles dispersed on the GC surface adsorbed with the cobalt porphyrin exhibit the highest activity for the electrocatalytic reduction of dioxygen. However it is interesting that the cobalt ion is lost from the center of the porphyrin ring during the preparation of the cobalt porphyrin + Nation mixture solution, while the porphyrin ring still remains in the Nation film, as shown by EDX analysis. The incorporation of the porphyrin may change the structure of the Nafion film into a looser form, since the platinum particles dispersed in the film are more readily exposed, resulting in more favourable mass transfer and higher activity for the electrocatalytic reduction of dioxygen." @default.
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- W2026602178 date "1991-09-01" @default.
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- W2026602178 title "Electrodeposition of platinum particles on glassy carbon modified with cobalt porphyrin and nafion film and their electrocatalytic reduction of dioxyge" @default.
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- W2026602178 doi "https://doi.org/10.1016/0022-0728(91)85439-v" @default.
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