Reactivity of carbon black diamond electrode during the electro-oxidation of Remazol Brilliant Blue R

Ajeel, M.A. and Aroua, M.K. and Daud, W.M.A.W. (2016) Reactivity of carbon black diamond electrode during the electro-oxidation of Remazol Brilliant Blue R. RSC Advances, 6 (5). pp. 3690-3699. ISSN 2046-2069

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Official URL: https://doi.org/10.1039/c5ra21487d

Abstract

This article reports for the first time, the reactivity of Carbon Black Diamond (CBD) electrode using cyclic voltammetry and electrochemical impedance techniques in 0.25 M H2SO4 solution containing 0.5 mM K4Fe(CN)6. Three CBD electrodes with different content of carbon black 5% (5CBD), 10% (10CBD), and 20% (20CBD) were used in this study. The reactions of the CBD electrodes were quasi-reversible while the 5CBD electrode had the best activity compared to 10CBD and 20CBD electrodes. The anodic oxidation behavior of Remazol Brilliant Blue R (RBBR) was investigated by using cyclic voltammetry and electrochemical impedance techniques on the 5CBD electrode in different pH solutions. The results indicated that the RBBR oxidized at 1.3 V, and the electro-oxidation process was more active in the low pH solution. Furthermore, the removal rate of RBBR on 5CBD attained 99.5% after 4 hours of the electro-oxidation process.

Item Type: Article
Uncontrolled Keywords: Anodic oxidation; Carbon black; Cyclic voltammetry; Dyes; Electrodes; Electrooxidation; Oxidation; Oxidation resistance
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 Nov 2017 06:14
Last Modified: 08 Nov 2017 08:53
URI: http://eprints.um.edu.my/id/eprint/18167

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