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Electrocatalytic materials for the electrochemical oxidation of synthetic dyes

Paper ID Volume ID Publish Year Pages File Format Full-Text
48575 46513 2007 7 PDF Available
Title
Electrocatalytic materials for the electrochemical oxidation of synthetic dyes
Abstract

The electrocatalytic properties of Ti–Ru–Sn ternary oxide, platinum, lead dioxide and boron-doped diamond anodes for the oxidation of methyl red have been compared by potentiodynamic measurements and bulk electrolysis. The results of the cyclic voltammetries have shown that in the potential region of supporting electrolyte stability polymeric materials, which result in electrode deactivation, are formed on the electrode surfaces. While Ti–Ru–Sn ternary oxide and platinum cannot restore their initial activity by polarization, lead dioxide and boron-doped diamond anodes can be reactivated by electrolysis in the potential region of electrolyte decomposition due to the electrogeneration of hydroxyl radicals.The bulk electrolysis showed that the complete COD and colour removal were only achieved using lead dioxide and boron-doped diamond while Ti–Ru–Sn ternary oxide and platinum only permitted a partial oxidation of methyl red.

Keywords
Electrocatalysis; Methyl red; Oxidation; Cyclic voltammetry; Bulk electrolysis
First Page Preview
Electrocatalytic materials for the electrochemical oxidation of synthetic dyes
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 75, Issues 1–2, 29 August 2007, Pages 95–101
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis