SilverSil: A New Class of Antibacterial Materials of Broad Scope.

Yael Albo,Rosaria Ciriminna,Mario Pagliaro,Keren Trabelsi

doi:10.1002/open.202000016

Yael Albo, Rosaria Ciriminna + Show 2 more

Open Access

https://doi.org/10.1002/open.202000016

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Abstract

Consisting of organically modified silica (ORMOSIL) physically doped with Ag nanoparticles, the SilverSil new class of antibacterial materials of broad scope reported herein shows remarkably high and stable activity against representative Gram‐positive and Gram‐negative bacteria. The low cost, ease of application and excellent health and environmental profile of SilverSil hybrid glassy coatings open the route to their widespread utilization across domestic, hospital, school, industrial and commercial environments and in consumer products.

Highlights

SilverSil hybrid glassy coatings open the route to their widespread utilization across domestic, hospital, school, industrial and commercial environments and in consumer products
Washing fabrics functionalized with Ag NPs releases silver, but this does not affect the antimicrobial efficacy of the washed fabrics as shown for example by > 99.9 % inhibition of Escherichia coli growth on textiles retaining as little as 2 ppb Ag after prolonged washing.[9]
No visible-light induced photocatalytic activity of the titania coatings was detected upon silver addition, whereas the significant original antibacterial activity was partly retained after 20 h in contact with buffered solution only for samples prepared by impregnating the porous titania coatings with 1 M AgNO3.[15]

Summary

Introduction

SilverSil hybrid glassy coatings open the route to their widespread utilization across domestic, hospital, school, industrial and commercial environments and in consumer products. We report the discovery that SilverSil, a new class of antibacterial materials comprised of organically modified silica (ORMOSIL) physically doped with Ag nanoparticles, shows such remarkably high and stable activity against representative SilverSil materials of different composition (Table 1) were obtained by sol-gel hydrolytic co-polycondensation of TEOS and methyltriethoxysilane (MTEOS) in the presence of dissolved silver nitrate.

Results

Conclusion