有機酸を含む過塩素酸水溶液中の鉄に関する電位-電気二重層容量曲線

金属腐食と電気二重層に関する研究 (第3報)

抄録

The effects of organic anions on the curve representing differential capacity (C) at the interface of iron-perchloric acid solution against electrode potential (E) were measured. Three peaks on the above C-E curve of Fe-HClO₄ system containing no additives were suppressed by the addition of organic acids, while new peaks due to the adsorption of the acids appeared. Coadsorption of ClO₄^- happened with acetate and propionate ions, but not with citrate ion. These findings should be interpreted as due to adsorption of citrate ion more irreversible than the other two. As the results of the present experiment, the ascending order of the covering power of surface was as follows.
Acetate<propionate<citrate