Photo-assisted inactivation of Escherichia coli bacteria by silver functionalized titanate nanotubes, Ag/H2Ti2O5•H2O

被引：15
作者：
Patron-Soberano, A. [1 ]
Nunez-Luna, B. P. [2 ]
Casas-Flores, S. [1 ]
De las Penas, A. [1 ]
Doimnguez-Espindola, R. B. [3 ]
Rodriguez-Gonzalez, V. [2 ]
机构：
[1] Inst Potosino Invest Cient & Tecnol, Div Biol Mol, San Luis Potosi, Slp, Mexico
[2] Inst Potosino Invest Cient & Tecnol, Div Mat Avanzados, San Luis Potosi, Slp, Mexico
[3] Univ Autonoma Estado Morelos, Posgrad Ingn Quim Aplicadas, Cuernavaca, Morelos, Mexico
来源：
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES | 2017年 / 16卷 / 06期
关键词：
TIO2; MECHANISM; WATER; NANOCOMPOSITES; CELLS;
D O I：
10.1039/c6pp00237d
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
One-dimensional titanate nanotubes (H2Ti2O5 center dot H2O) functionalized with silver nanoparticles (AgNPs) exhibited unique properties for the effective inactivation of the Gram-negative Escherichia coli within 45 minutes under irradiation using a 65 W halogen lamp. The pathway of the photo-assisted catalytic inactivation was examined by SEM and TEM using a reproducible biological protocol for sample preparations. The membrane integrity of the bacteria was damaged due to the oxidative stress caused by the reactive oxygen species, the bacteriostatic effect of the highly-dispersed-surface AgNPs (similar to 5 nm) and the sharp nanotube penetration that induced the cell death.
引用
收藏
页码：854 / 860
页数：7
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