alexa Study of Bacterial Sensitivity to Ag-TiO2 Nanoparticles | OMICS International | Abstract
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
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Research Article

Study of Bacterial Sensitivity to Ag-TiO2 Nanoparticles

Tessy M. Lopez Goerne1,2,3*, Mayra A. Alvarez Lemus2, Verónica Angeles Morales4, Esteban Gómez López1,2 and Patricia Castillo Ocampo5

1Health Department, Universidad Autónoma Metropolitana – Xochimilco, Mexico

2Nanotechnology Laboratory, Mexico

3Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, LA 70118

4Infectology Department, National Institute of Neurology and Neurosurgery, Av. Insurgentes sur 3877, Col. La Fama, Tlalpan, México

5Laboratorio Central de Microscopia, División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Iztapalapa, Mexico

*Corresponding Author:
Tessy M. Lopez Goerne
Health Department, Universidad Autónoma Metropolitana – Xochimilco
Calzada del Hueso 1100, Col. Villa Quietud
Delegación Coyoacán, C. P. 04960, D.F. México
E-mail: [email protected]

Received Date: March 30, 2012; Accepted Date: May 21, 2012; Published Date: May 25, 2012

Citation: Lopez Goerne TM, Alvarez Lemus MA, Morales VA, López EG, Ocampo PC (2012) Study of Bacterial Sensitivity to Ag-Tio2 Nanoparticles. J Nanomed Nanotechol S5:003. doi:10.4172/2157-7439.S5-003

Copyright: © 2012 Lopez Goerne TM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Background: Silver has been widely used for disinfection because of its well known antibacterial properties.
Recently, silver nanoparticles have shown higher activity killing and inhibiting bacterial reproduction. In the present work we obtained silver nanoparticles highly dispersed over nanostructured titania in order to enhance bacterial sensitivity.
Materials and methods: Four different Titania-based nanoparticles were synthesized by the Sol-Gel process using Ag2SO4, AgCl, AgNO3 and CH3COOAg as silver precursor. All the materials were characterized by FTIR, UV-Vis and XPS, TEM microscopy, EDS, also BET and DRX analysis were carried out.
Results: Amorphous materials were apparently obtained. Ag-TiO2 nanoparticles were tested against several Gramnegative and Gram-positive bacteria including enterophatogenic Escherichia coli and highly resistant strains such as methicillin-resistant Staphylococcus aureus and they showed sensibility in most of cases.
Conclusions: Supported silver nanoparticles represent a suitable way to obtain highly dispersed active silver over higher surface area. This approach allows it use as efficient bactericide since lower silver amount can be employed.

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