Title:Synthesis and Characterization of Ag/SiO2 Nanoparticles Embedded in TPS and TEOS Sol-gel Matrix with Excellent Antibacterial Activity
VOLUME: 8 ISSUE: 1
Author(s):Ali R. Allafchian*, Seyyed S. Banifatemi and Seyed A.H. Jalali
Affiliation:Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology (IUT), PO Box: 84156-83111, Isfahan, Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology (IUT), PO Box: 84156-83111, Isfahan, Research Institute for Biotechnology and Bioengineering, Isfahan University of Technology, Isfahan 84156-83111
Keywords:Silver, polymer, antibactrial, Sol-gel, nanocomposite, silicone polymers.
Abstract:Introduction: The present study aimed at investigating the antimicrobial effect of
Ag/SiO2 embedded in (3-mercaptopropyl) trimethoxysilane (TPS) and tetraethyl orthosilicate
(TEOS) by employing the sol-gel method. The connection between the Ag/SiO2 and the
sol-gel matrix relied on the coordination bonds between the sulfur group at the top of the
TPS molecule and the silver atoms on the surface of Ag/SiO2 nanoparticles (NPs).
Method: In order to characterize the structure and the morphology of Ag/SiO2 nanocomposite
the field emission scanning of electron microscopy (FESEM), transmission electron microscopy
(TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR)
and atomic force microscopy (AFM) were used. The release of Ag+ ions under exposure to
water was investigated with the inductively coupled plasma (ICP) method after 21 days.
Result: The nanocomposite showed good antibacterial activity against some gram-positive
and gram-negative bacteria. The amount of silver release as Ag+ ions was found with the accuracy
of ICP analysis.
Conclusion: Furthermore, the low release new nanocomposite was found to have great potential
application in antibacterial activity.
