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Electrochemical study of Mn2+ Redox System on 4-hydroxybenzylidene-Carbamide -CTAB modified Glassy Carbon Electrode

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Author Affiliations

  • 1Post-graduate and Research Department of Chemistry, Presidency College, Chennai, Tamil Nadu, INDIA

Res.J.chem.sci., Volume 3, Issue (8), Pages 29-37, August,18 (2013)

Abstract

The 4-hydroxybenzylidenecarbamide-cetyltrimethylammoniumbromide modified glassy carbon electrode (ligand-CTAB/GCE) is prepared by drop coating technique. The complexation effect of Mn2+ with the ligand is studied through scan rate effect, concentration effect in cyclic voltammetry technique. Transfer coefficient number (n) of Mn2+ ion on ligand-CTAB/GCE is found to be 0.204. The surface concentration of electroactive species (Γ) on ligand-CTAB/GCE was found to be 0.9436 x 10-8molcm-2. The rate constant for manganese ion redox system is first order and found to be 1.857s-1. The optimum pH for manganese redox system on ligand-CTAB/GCE is found to be 6. The interference of Cu2+, Cd2+ and Hg2+ ions on manganese redox system is investigated through the interference study. Cyclic voltammetry, chronoamperometry and chronocoulometry study shows that manganese redox system has diffusion controlled process. The stability of the film on GCE is investigated through the multisweep cycle experiment and is found to be stable.

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