Electrochemical Oxidation of Alizarin Red-S on Glassy Carbon Electrode: Mechanistic Study, Surface Adsorption and Preferential Surface Orientation. Issue 7 (1st January 2016)

• Record Type: Journal Article
• Authors: Dadpou, Bita; Nematollahi, Davood
• Is Part Of: Journal of the Electrochemical Society. Volume 163:Issue 7(2016)
• Page Start: H559
• Page End: H565
• Publication Date: 2016-01-01
• Subjects: Alizarine red S -- Cyclic voltammetry -- Electrochemical oxidation -- Gaussian software -- Surface adsorption; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0781607jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : The electrochemical oxidation of alizarin red-S has been studied using cyclic and differential pulse voltammetry, double step chronocoulometry and impedance spectroscopy in aqueous solution on glassy carbon electrode. The results revealed that alizarin red-S shows one oxidation peak and two reduction peaks. Electrochemical adsorption of alizarin red S was also studied in more details on glassy carbon surface. Double layer charge was calculated by chronocoulometric measurement in two ways, by using organic solvent for diminishing surface adsorption and by using a blank solution without alizarin red S. Obtained results showed that alizarin red-S adsorbed on glassy carbon in multi-layer arrays. Computational calculations were done by Chem Bio 3D software and Gaussian software on B3 LYP/6-311 ++ (d, p) level of theory.