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Nanomaterials 2017, 7(9), 240; doi:10.3390/nano7090240

Antimicrobial Properties of Silver Cations Substituted to Faujasite Mineral

1
Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, 30-387 Kraków, Poland
2
Institute of the Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
3
Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
4
Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
5
Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
*
Author to whom correspondence should be addressed.
Received: 10 July 2017 / Revised: 7 August 2017 / Accepted: 25 August 2017 / Published: 27 August 2017
(This article belongs to the Special Issue Antibacterial Activity of Nanomaterials)
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Abstract

A goal of our study was to find an alternative to nano-silver-based antimicrobial materials which would contain active silver immobilized in a solid matrix that prevents its migration into the surrounding environment. In this study, we investigated whether silver cations dispersed in an atomic form and trapped in an ion-exchanged zeolite show comparable antimicrobial activity to silver nanoparticles (NPs). The biocidal active material was prepared from the sodium form of faujasite type zeolite in two steps: (1) exchange with silver cations, (2) removal of the external silver oxide NPs by elution with Na2EDTA solution. The modified biocidal zeolite was then added to paper pulp to obtain sheets. The zeolite paper samples and reference samples containing silver NPs were tested in terms of biocidal activity against an array of fungi and bacteria strains, including Escherichia coli, Serratia marcescens, Bacillus subtilis, Bacillus megaterium, Trichoderma viride, Chaetomium globosum, Aspergillus niger, Cladosporium cladosporioides, and Mortierella alpina. The paper with the modified faujasite additive showed higher or similar antibacterial and antifungal activities towards the majority of tested microbes in comparison with the silver NP-filled paper. A reverse effect was observed for the Mortierella alpina strain. View Full-Text
Keywords: zeolites; silver nanoparticles; paper; antimicrobial zeolites; silver nanoparticles; paper; antimicrobial
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jędrzejczyk, R.J.; Turnau, K.; Jodłowski, P.J.; Chlebda, D.K.; Łojewski, T.; Łojewska, J. Antimicrobial Properties of Silver Cations Substituted to Faujasite Mineral. Nanomaterials 2017, 7, 240.

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