Jump to main content
Jump to site search

Issue 18, 2014
Previous Article Next Article

Silver confined within zeolite EMT nanoparticles: preparation and antibacterial properties

Author affiliations

Abstract

The preparation of pure zeolite nanocrystals (EMT-type framework) and their silver ion-exchanged (Ag+-EMT) and reduced silver (Ag0-EMT) forms is reported. The template-free zeolite nanocrystals are stabilized in water suspensions and used directly for silver ion-exchange and subsequent chemical reduction under microwave irradiation. The high porosity, low Si/Al ratio, high concentration of sodium and ultrasmall crystal size of the EMT-type zeolite permitted the introduction of a high amount of silver using short ion-exchange times in the range of 2–6 h. The killing efficacy of pure EMT, Ag+-EMT and Ag0-EMT against Escherichia coli was studied semi-quantitatively. The antibacterial activity increased with increasing Ag content for both types of samples (Ag+-EMT and Ag0-EMT). The Ag0-EMT samples show slightly enhanced antimicrobial efficacy compared to that of Ag+-EMT, however, the differences are not substantial and the preparation of Ag nanoparticles is not viable considering the complexity of preparation steps.

Graphical abstract: Silver confined within zeolite EMT nanoparticles: preparation and antibacterial properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Jun 2014, accepted on 16 Jul 2014 and first published on 24 Jul 2014


Article type: Paper
DOI: 10.1039/C4NR03169E
Author version available: Download Author version (PDF)
Citation: Nanoscale, 2014,6, 10859-10864
  •   Request permissions

    Silver confined within zeolite EMT nanoparticles: preparation and antibacterial properties

    B. Dong, S. Belkhair, M. Zaarour, L. Fisher, J. Verran, L. Tosheva, R. Retoux, J.-P. Gilson and S. Mintova, Nanoscale, 2014, 6, 10859
    DOI: 10.1039/C4NR03169E

Search articles by author

Spotlight

Advertisements