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Title: | Utilization of SnO2 anodes to the electrochemical degradation of biorefractory dyes | Authors: | Ihos, Monica Bocea, Gligor Andres, Ladislau Manea, Florica |
Keywords: | Electrochemical properties;SnO2;Cyclic voltammetry | Issue Date: | 2007 | Abstract: | This study deals with the characterization of electrochemical properties of doped SnO2 anodes by cyclic voltammetry (CV) and their use for Reactive Blue 4 azo dye (RB4) degradation. The experiments were carried out by using Ti/Ru02/SnO2-SbO5-RuO2 anodes (94:3:3 Sn:Sb:Ru molar ratio in precursors solution) prepared by thermal decomposition method. Cyclic voltammograms were recorded at a scan rate of 0.05 V/s and potential range from 0 V to 1.5 V vs. SCE in 0.1 M Na2SO4 and 0.1 g/L RB4. The supporting electrolyte was 0.1 M Na2SO4. Degradation experiments were carried out in solutions of 0.1 g/l DYE IN 0.1 m Na2SO4, applied current densities of 25, 50, 75 and 100 A/m2 at various electrolysis times and pH values: 6.2; 11 and 3. The cyclic voltammograms showed that the oxidation of dye could occur under conditions of simultaneous O2 evolution. The best value for the colour removal efficiency was about 99% for an applied current density of 100 A/m2 and 120 minutes of electrolysis at any pH value. |
Description: | The 14th Symposium on Analytical and Environmental Problems, Szeged, Hungary |
URI: | http://hdl.handle.net/123456789/981 |
Appears in Collections: | Conference Papers |
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File | Description | Size | Format | |
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Utilization of SnO2 anodes to the electrochemical degradation of biorefractory dyes.pdf | 3.6 MB | Adobe PDF | View/Open |
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