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Citation: Xiao Shao-Rong, Wang Ying, Wang Bao-Chen. Studies of Oxygen Reduction on Polycobaltprotoporphyrin Film with RRDE[J]. Acta Physico-Chimica Sinica, ;1996, 12(02): 141-145. doi: 10.3866/PKU.WHXB19960210 shu

Studies of Oxygen Reduction on Polycobaltprotoporphyrin Film with RRDE

1.
Chemistry Department,Guangxi Teachers College,Nanning 530001

Received Date: 22 May 1995
Available Online: 15 February 1996

The mechanism of oxygen reduction on polycobaltprotoporphyrin IX dimethyl ester (PolyCoPP) film has been studied by using the rotating ring(Au)-disk(pyrolytic graphite, PG) electrode (RRDE) technique. The PolyCoPP/PG electrode promotes the oxygen reduction via two-electron process which produces peroxide as a main product in O2-saturated 0.1 mol•dm-3 NaOH. Once HO2- has been formed, no further reduction to OH- takes place at the disk. When the disk potential shifts to more negative, either the direct reduction of O2 to OH- or the further reduction of HO2- to OH- occurs.
- Polycobaltprotoporphyrin IX dimethyl ester(PolyCoPP),
- Oxygen,
- Rotating ring-disk electrode(RRDE)
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