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本文用三角波动电位扫描法对活性炭表面电化学性质进行了探讨.测得活性炭表面基团的浓度为3.4×1~(-7)(moles/em~2),表面基团数为1.08×1~(20),接近文献值.确定表面电活性基团的氧化与还原都是不可逆的.证实H_2O_2产生于O_2与氢醌基的相互作用,结果还支持醌-氢醌活性基团浓度比决定碳电极电位的假设.
In this paper, the electrochemical behavior of activated carbon surface was investigated by the triangular wave potential sweep method.The concentration of surface groups on activated carbon was 3.4 × 1 ~ (-7) (moles / em ~ 2) and the number of surface groups was 1.08 × 1 ~ (20), close to the literature value.It is confirmed that the oxidation and reduction of surface electroactive groups are irreversible.It is confirmed that H 2 O 2 is generated by the interaction of O 2 with hydroquinone and the results also support the concentration ratio of quinone-hydroquinone active groups Carbon electrode potential assumption.