| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14801970 Araraquara, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | APPLIED CATALYSIS B-ENVIRONMENTAL; v. 99, n. 1-2, p. 96-102, AUG 31 2010. |
| Web of Science Citations: | 58 |
| Abstract | |
Self-organized Ti/TiO(2) nanotubular array electrodes may be achieved by simple electrochemical anodization of Ti foil in NH(4)F/glycerol water solution. The photocurrent on nanotubular layers is remarkably improved in relation to that obtained on comparable nanoporous TiO(2) films created by a sol gel process. The anatase form is priori in the highly ordered TiO(2) annealed at 450 degrees C which improves its photoactivity. Both electrodes promote complete degradation of the investigated aromatic amine ODAN (4,4'-oxydianiline) after 120 min of photoeletrocatalytic oxidation with potential of 1.5V and UV irradiation. But, the ODAN mineralization is about 50% more efficient on nanotubular electrodes. The best experimental conditions were found to be pH 2.0 and 0.1 mol L(-1) Na(2)SO(4) when the photoelectrode was biased at +1.5 V (vs. SCE). Complete mineralization of the aromatic amine content (100% TOC reduction) was achieved after 2 h. Effects of other electrolytes, pH, amine concentration and applied potentials also have been investigated and are discussed. (C) 2010 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 07/07313-3 - PREPARATION, CHARACTERIZATION AND APPLICATION OF ELECTRODES OF NANOTUBES OF TiO2 ON PHOTOELECTROCATALITIC DEGRADATION OF AROMATIC AMINES. |
| Grantee: | Juliano Carvalho Cardoso |
| Support Opportunities: | Scholarships in Brazil - Doctorate |