Electrochemical Studies on the Methylviologen-Sodium Dodecyl Sulfate Solution in the Presence of <TEX>$MgCl_2$</TEX>

Ko, Young Chun; 고영춘; Chung, Keun Ho; 정근호

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.11, No.3

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Electrochemical Studies on the Methylviologen-Sodium Dodecyl Sulfate Solution in the Presence of $MgCl_2$

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1998, v.11 no.3, pp.151-155

Ko, Young Chun
Chung, Keun Ho

Ko, Y. C., & Chung, K. H. (1998). Electrochemical Studies on the Methylviologen-Sodium Dodecyl Sulfate Solution in the Presence of <TEX>$MgCl_2$</TEX>. , 11(3), 151-155.

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Abstract

Electrochemical behaviours on 1.0 mM methylviologen ($MV^{2+}$) in 100 mM NaCl+27 mM $MgCl_2$ solution, without and with sodium dodecyl sulfate (SDS), were studied. The intersection of two lines on ${\Delta}E_p$ (the difference between the anodic, $E_{pa}$, and the cathodic, $E_{pc}$, peak potentials) of the first and second redox waves vs. -log[SDS] plot was determined as a critical micelle concentration (CMC). When $Mg^{2+}$ was added, the effective access of $MV{\cdot}^+$ to the glassy carbon electrode surface became possible and the formation of micelles was retarded.