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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F17%3A43910028" target="_blank" >RIV/62156489:43410/17:43910028 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/17:73583592

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10853-016-0565-5" target="_blank" >http://dx.doi.org/10.1007/s10853-016-0565-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10853-016-0565-5" target="_blank" >10.1007/s10853-016-0565-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

In this study, the antifungal effects of copper and silver nano-particles against two wood-rotting fungi were investigated. European beech (Fagus sylvatica L.) and Scots pine (Pinus sylvestris L.) sapwood specimens of dimensions 50 x 25 x 15 mm3 were vacuum impregnated using dispersions of copper and silver nano-particles 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 analyzed afterwards. The highest value of retention was observed for pine sapwood (~ 2 kg.m-3) for both nanoparticle solutions. The amount of nano-particles 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% to 35% was observed for copper nano-particles, depending on used wood species and concentration. Significantly lower leaching (max. 15 %) was observed for pine sapwood impregnated by silver nano-particles with a concentration of 3 g/l. The highest antifungal effect (under 5 % of mass loss) 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 nano-particles, and provide groundwork for further research (e.g. fixation of substances in the wood structure, etc.).

Název v anglickém jazyce

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

Popis výsledku anglicky

In this study, the antifungal effects of copper and silver nano-particles against two wood-rotting fungi were investigated. European beech (Fagus sylvatica L.) and Scots pine (Pinus sylvestris L.) sapwood specimens of dimensions 50 x 25 x 15 mm3 were vacuum impregnated using dispersions of copper and silver nano-particles 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 analyzed afterwards. The highest value of retention was observed for pine sapwood (~ 2 kg.m-3) for both nanoparticle solutions. The amount of nano-particles 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% to 35% was observed for copper nano-particles, depending on used wood species and concentration. Significantly lower leaching (max. 15 %) was observed for pine sapwood impregnated by silver nano-particles with a concentration of 3 g/l. The highest antifungal effect (under 5 % of mass loss) 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 nano-particles, and provide groundwork for further research (e.g. fixation of substances in the wood structure, etc.).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Materials Science

ISSN

0022-2461

e-ISSN

—

Svazek periodika

52

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

2720-2729

Kód UT WoS článku

000389611000028

EID výsledku v databázi Scopus

2-s2.0-84994718670