The Role of Ion Exchange and Sorptive-Reduction for Interaction of Active Carbons with Noble Metals

抄録

The sorption behavior of ions on active carbons (ACs) was compared for three elements of the copper group, Cu, Ag and Au, between a basic AC and an acidic AC, and between a deaerated and aeratedd conditions. The difference among the sorption conditions was explained by assuming that the sorption proceeds partly by an ion exchange and partly by the reductive sorption. It was also discussed in terms of electrochemical impedance spectroscopy and quantum chemical analysis.