Electrochemical behavior of NH4VO3 in glyceline DES studied by cyclic voltammetry method

Nasir, Sharifah Nurain Syed and Sidek, Nadiah and Kadir, Mohd Fakhrul Zamani and Manan, Ninie Suhana Abdul (2019) Electrochemical behavior of NH4VO3 in glyceline DES studied by cyclic voltammetry method. Ionics, 25 (10). pp. 4981-4990. ISSN 0947-7047, DOI https://doi.org/10.1007/s11581-019-03054-w.

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Official URL: https://doi.org/10.1007/s11581-019-03054-w


In the present work, the redox behavior of vanadate ion in deep eutectic solvent (DES) was studied via cyclic voltammetry (CV) method where glyceline DES and NH4VO3 were used as electrolyte and the source of + 5 vanadium ions respectively. The CV showed a quasi-reversible redox couple pattern of + 5 to + 4 vanadium ions in glyceline DES. Analysis by UV-Vis revealed the presence of + 3 vanadium ions at λmax 545 nm. The glyceline DES does not only act as a solvent but also as a reducing agent by chemically reducing + 4 vanadium ions to the most stable oxidation state of + 3. Temperature dependence study of vanadate ion in glyceline DES showed that the peak current increased with temperature which enhances the reaction kinetics. In addition, the conductivity of NH4VO3 in glyceline DES improved remarkably with temperature, whereas its viscosity declined. Moreover, the Rs and Rct values decreased with increasing temperature. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type: Article
Funders: University Malaya Research Grant (UMRG): RP020B-16SUS
Uncontrolled Keywords: Cyclic voltammetry; Deep eutectic solvents; Glyceline; Redox behavior; Vanadium
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Centre for Foundation Studies in Science > Physics Division
Faculty of Science > Department of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 20 Feb 2020 03:17
Last Modified: 20 Feb 2020 03:17
URI: http://eprints.um.edu.my/id/eprint/23875

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