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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Silver ion release from electrodes of nanotubes of TiO2 impregnated with Ag nanoparticles applied in photoelectrocatalytic disinfection

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Author(s):
Brugnera, Michelle Fernanda [1] ; Miyata, Marcelo [2] ; Fujimura Leite, Clarice Queico [2] ; Boldrin Zanoni, Maria Valnice [1]
Total Authors: 4
Affiliation:
[1] UNESP, Dept Analyt Chem, Inst Chem Araraquara, BR-14800900 Araraquara, SP - Brazil
[2] UNESP, Dept Biol Sci, Fac Pharmaceut Sci Araraquara, BR-14800900 Araraquara, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY; v. 278, p. 1-8, MAR 15 2014.
Web of Science Citations: 18
Abstract

Self-organized TiO2 nanotubes arrays electrodes were impregnated with 0-16% of Ag nanoparticles (Ti/TiO2-Ag) using different procedures. The electrodes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and photocurrent vs potential curves. The best results were obtained by electrode prepared by photochemical reduction, after immersion in a solution AgNO3 0.05 M (pH 8). The monitoring of Ag+ lixiviation by anodic stripping voltammetry at glassy carbon electrode indicated that a maximum of 2.5 x 10(-6) M is released in the first 40 min of treatment, but it is neglected when used subsequently. Moreover, the antimicrobial behavior of electrodes Ti/TiO2-Ag applied in photoelectrocatalysis presented 100% disinfection in 3 min by using UV irradiation and 99.6% in 30 min with visible irradiation. In addition, the analysis of silver in solution along the reaction shows a negligible lixiviation and a high stability of the surface silver deposits. Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 09/09403-5 - Electroanalytical and chromatographic methods applied in the analysis of mycobacteria and photoeletrocatalytic disinfection of mycobacteria and candidas using electrodes of Ti/TiO2 and Ti/TiO2-Ag nanotubes
Grantee:Michelle Fernanda Brugnera
Support Opportunities: Scholarships in Brazil - Doctorate