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Preparation and antibacterial effects of Ag–SiO2 thin films by sol–gel method

Paper ID Volume ID Publish Year Pages File Format Full-Text
12019 773 2003 8 PDF Available
Title
Preparation and antibacterial effects of Ag–SiO2 thin films by sol–gel method
Abstract

In the present study, silver-doped silica thin films were successfully prepared by sol–gel method to apply for antibacterial materials. The starting solution was prepared from 1:0.24:3.75:2.2 molar ratios of Si(OC2H5)4):AgNO3:H2O:C2H5OCH2CH2OH and then the pH value controlled at 3 with 0.5 n HNO3 solution. The formation of silver-doped glassy silica thin films at various temperatures was investigated through infrared spectroscopy, ultraviolet–visible, scanning electron microscopy and X-ray diffraction. From these analysis data, it was found that silver ions were completely trapped in the silica matrix and their reduction could be achieved at 600°C annealing temperature. The antibacterial effects of silica thin films against Escherichia coli and Staphylococcus aureus were examined by film attachment method. The coating films had an excellent antibacterial performance.

Keywords
Antibacterial; Silver; Silica; Sol–gel method; Thin films
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Preparation and antibacterial effects of Ag–SiO2 thin films by sol–gel method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 24, Issue 27, December 2003, Pages 4921–4928
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us