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Erschienen in: Journal of Materials Science 5/2017

10.11.2016 | Original Paper

Antifungal effects of copper and silver nanoparticles against white and brown-rot fungi

verfasst von: Petr Pařil, Jan Baar, Petr Čermák, Peter Rademacher, Robert Prucek, Martin Sivera, Aleš Panáček

Erschienen in: Journal of Materials Science | Ausgabe 5/2017

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Abstract

In this study, the antifungal effects of copper and silver nanoparticles against two wood-rotting fungi were investigated. European beech (Fagus sylvatica L.) and Scots pine (Pinus sylvestris L.) sapwood specimens of dimensions 50 × 25 × 15 mm3 were vacuum impregnated using dispersions of copper and silver nanoparticles within two concentrations, i.e. 1 and 3 g/l. Beech wood specimens were tested against white-rot fungus (Trametes versicolor) and pine wood against brown-rot fungus (Poria placenta) according to EN113. Furthermore, leachability, retention and protection efficiency (mass loss due to decay) were analysed afterwards. The highest value of retention was observed for pine sapwood (~2 kg/m3) for both nanoparticle solutions. The amount of nanoparticles in the wood did not increase proportionally with an increasing concentration, but only 1.5–2 times increase was reached. An average leaching of 15–35% was observed for copper nanoparticles, depending on used wood species and concentration. Significantly, lower leaching (max. 15%) was observed for pine sapwood impregnated by silver nanoparticles with a concentration of 3 g/l. The highest antifungal effect [under 5% of mass loss (ML)] against both tested fungi was found for nano-copper treatment at the concentration of 3 g/l. However, this effect of treatment seems to be almost negligible after the leaching test. Therefore, this study aims to present fundamental material properties of wood treated with copper and silver nanoparticles, and provide groundwork for further research (e.g. fixation of substances in the wood structure, etc.).

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Metadaten
Titel
Antifungal effects of copper and silver nanoparticles against white and brown-rot fungi
verfasst von
Petr Pařil
Jan Baar
Petr Čermák
Peter Rademacher
Robert Prucek
Martin Sivera
Aleš Panáček
Publikationsdatum
10.11.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 5/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0565-5

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