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

被引：21

作者：

Brugnera, Michelle Fernanda ^{[1
]}

Miyata, Marcelo ^{[2
]}

Zocolo, Guilherme Juliao ^{[1
]}

Fujimura Leite, Clarice Queico ^{[2
]}

Boldrin Zanoni, Maria Valnice ^{[1
]}

机构：

[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

来源：

ELECTROCHIMICA ACTA | 2012年 / 85卷

基金：

巴西圣保罗研究基金会;

关键词：

Water disinfection; TiO2; nanotubes; Mycobacterium smegmatis; Ag-coated TiO2; Photoelectrocatalysis; TITANIUM-DIOXIDE; ESCHERICHIA-COLI; PHOTOCATALYTIC DISINFECTION; MASS-SPECTROMETRY; MYCOLIC ACIDS; WATER; TIO2; SYSTEMS; FILMS; NANOPARTICLES;

D O I：

10.1016/j.electacta.2012.08.116

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：33 / 41

页数：9

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