Enhanced formation of silver nanoparticles in Ag -NOM-iron(II, III) systems and antibacterial activity studies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33152268" target="_blank" >RIV/61989592:15310/14:33152268 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15110/14:33152268

Výsledek na webu

<a href="http://pubs.acs.org/doi/pdf/10.1021/es405641r" target="_blank" >http://pubs.acs.org/doi/pdf/10.1021/es405641r</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/es405641r" target="_blank" >10.1021/es405641r</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced formation of silver nanoparticles in Ag -NOM-iron(II, III) systems and antibacterial activity studies

Popis výsledku v původním jazyce

This work reports the role of iron redox pair (Fe3+/Fe2+) in the formation of naturally occurring silver nanoparticles (AgNPs) in the aquatic environment. The results showed that Fe3+ or Fe2+ ions in the mixtures of Ag+ and natural organic matter enhanced the formation of AgNPs. The formation of AgNPs depended on pH and types of organic matter. Increase in pH enhanced the formation of AgNPs, and humic acids as ligands showed higher formation of AgNPs compared to fulvic acids. The observed results were described by considering the potentials of redox pairs of silver and iron species and the possible species involved in reducing silver ions to AgNPs. Dynamic light scattering and transmission electron microscopy measurements of AgNPs revealed mostly bimodal size distribution with decrease in size of AgNPs due to iron species in the reaction mixture. Minimum inhibitory concentration of AgNPs needed to inhibit the growth of various bacterial species suggested the role of surfaces of tested

Název v anglickém jazyce

Enhanced formation of silver nanoparticles in Ag -NOM-iron(II, III) systems and antibacterial activity studies

Popis výsledku anglicky

This work reports the role of iron redox pair (Fe3+/Fe2+) in the formation of naturally occurring silver nanoparticles (AgNPs) in the aquatic environment. The results showed that Fe3+ or Fe2+ ions in the mixtures of Ag+ and natural organic matter enhanced the formation of AgNPs. The formation of AgNPs depended on pH and types of organic matter. Increase in pH enhanced the formation of AgNPs, and humic acids as ligands showed higher formation of AgNPs compared to fulvic acids. The observed results were described by considering the potentials of redox pairs of silver and iron species and the possible species involved in reducing silver ions to AgNPs. Dynamic light scattering and transmission electron microscopy measurements of AgNPs revealed mostly bimodal size distribution with decrease in size of AgNPs due to iron species in the reaction mixture. Minimum inhibitory concentration of AgNPs needed to inhibit the growth of various bacterial species suggested the role of surfaces of tested

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Environmental Science and Technology

ISSN

0013-936X

e-ISSN

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Svazek periodika

48

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

3228-3235

Kód UT WoS článku

000333776000019

EID výsledku v databázi Scopus

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