Electrochemistry of bis(1,10-phenanthroline)copper(Ⅱ)-socdium dodecyl sulfate solution in the presence of MgCl2

Abstract

Electrochemistry of 1.0 mM bis(1,10-phenanthroline)copper(II) (Cu(ph)22+) in 100 mM NaCl solution2 with and without sodium dodecyl sulfate (SDS) is studied. In the presence of SDS,Epa and E1/2 of Cu(ph)22+ by adding Mg2+ shifts to a positive direction compared to the SDS free. The intersectionof two lines on Ep vs -log[SDS] plot is determined as a critical micele concentration (CMC). When Mg2+is added, it seems that the double layer became more compact. And the formation of micelles is retarded.. . : ...... .... .. (1,10-..... ).. (II) (Cu(ph)22+)-........ (SDS). ..... .... ..... . Mg2+. ... .. SDS. .... Cu(ph)22+. Epa. E1/2 .. .. ... .... . 1.0 mM Cu(ph)22+. 27 mM MgCl2. ... 10 mM NaCl .... , Ep . -log[SDS]