Preparation and characterization of Ti/SnO2-Sb electrode by Pechini's method for phenol oxidation

In this paper the influence of calcination temperature on the corrosion resistance of a Ti/SnO2-Sb electrode prepared according to Pechini's method and its efficiency for phenol oxidation in chloride medium were investigated. When calcination was performed at 600 °C tin distribution throughout...

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Bibliographic Details
Published in:Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 2011-09, Vol.14 (3), p.408-416
Main Authors: Santos, Iranildes Daniel, Gabriel, Sinara Borborema, Afonso, Júlio Carlos, Dutra, Achilles Junqueira Bourdot
Format: Article
Language:English
Subjects:
calcination temperature
corrosion
ENGINEERING, CHEMICAL
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
phenol removal
Ti/SnO2-Sb electrode
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Summary:In this paper the influence of calcination temperature on the corrosion resistance of a Ti/SnO2-Sb electrode prepared according to Pechini's method and its efficiency for phenol oxidation in chloride medium were investigated. When calcination was performed at 600 °C tin distribution throughout the film was more uniform, providing a more homogeneous film structure. Electrolysis of a 0.34 mol.L-1 NaCl solution containing 100 mg.L-1 phenol at 10 mA.cm-2 for 30 minutes lead to corrosion of the electrodes calcined at 400 and 500 °C, whereas the one calcined at 600 °C remained practically unchanged, indicating that the coating structure, which is dependent of calcination temperature, plays an important role on the structural integrity of electrode material. Phenol concentration was reduced in 90% with the Ti/SnO2-Sb electrode calcined at 600 °C after 60 minutes of electrolysis at 10 mA.cm-2.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/S1516-14392011005000054