Inactivation and disposal of by-products from Mycobacterium smegmatis by photoelectrocatalytic oxidation using Ti/TiO2-Ag nanotube electrodes

Autor(es)

Brugnera, Michelle Fernanda ^[1] ; Miyata, Marcelo ^[2] ; Zocolo, Guilherme Juliao ^[1] ; Fujimura Leite, Clarice Queico ^[2] ; Boldrin Zanoni, Maria Valnice ^[1]

Afiliação do(s) autor(es)

^[1] UNESP, Inst Chem, Dept Analyt Chem, BR-14800900 Araraquara, SP - Brazil

^[2] UNESP, Fac Pharmaceut Sci, Dept Biol Sci, BR-14801902 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Electrochimica Acta; v. 85, p. 33-41, DEC 15 2012.
• Citações Web of Science: 16

Resumo

TiO2 nanotubular array electrodes coated with 16% (w/w) Ag nanoparticles (Ti/TiO2-Ag) have shown excellent performance in the disinfection of water containing Mycobacterium smegmatis. Photoelectrocatalytic disinfection of M. smegmatis 5.1 x 10(3) Colony Forming Units (CFU) mL(-1) in 0.05 M Na2SO4 (pH 6), applied potential of +1.5 V versus Ag/AgCl and UV irradiation promoted 100% inactivation after 3 min of treatment. Mycobacteria degradation was also monitored by TOC removal, sugar release, chromatography and mass spectroscopy measurements. All analytical methods used confirmed that there was complete inactivation of mycobacteria and degradation of the by-products generated during cellular lyses by the proposed method. (C) 2012 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 09/09403-5 - Métodos eletroanalíticos e cromatográficos aplicados na análise de micobactérias e desinfecção fotoeletrocatalítica de micobactérias e candidas utilizando eletrodos de nanotubos de Ti/TiO2 e Ti/TiO2-Ag
• Beneficiário: Michelle Fernanda Brugnera
• Modalidade de apoio: Bolsas no Brasil - Doutorado