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Statements

Subject Item
n2:RIV%2F61989592%3A15110%2F13%3A33146889%21RIV14-TA0-15110___
rdf:type
n6:Vysledek skos:Concept
dcterms:description
Nanocomposites consisting of diatomaceous earth particles and silver nanoparticles (silver NPs) with high antimicrobial activity were prepared and characterized. For the purpose of nanocomposite preparation, silver NPs with an average size of 28 nm prepared by modified Tollens process were used. Nanocomposites were prepared using poly(diallyldimethylammonium) chloride (PDDA) as an interlayer substance between diatomite and silver NPs which enables to change diatomite original negative surface charge to positive one. Due to strong electrostatic interactions between negatively charged silver NPs and positively charged PDDA-modified diatomite, Ag/PDDA diatomite nanocomposites with a high content of silver (as high as 46.6 mg Ag per 1 g of diatomite) were prepared. Because of minimal release of silver NPs from prepared nanocomposites to aqueous media ({ 0.3 mg Ag per 1 g of nanocomposite), the developed nanocomposites are regarded as a potential useful antimicrobial material with a long-term efficiency showing no risk to human health or environment. All the prepared nanocomposites exhibit a high bactericidal activity against Gram-negative and Gram-positive bacteria and fungicidal activity against yeasts at very low concentrations as low as 0.11 g/L, corresponding to silver concentration of 5 mg/L. Hence, the prepared nanocomposites constitute a promising candidate suitable for the microbial water treatment in environmental applications. Nanocomposites consisting of diatomaceous earth particles and silver nanoparticles (silver NPs) with high antimicrobial activity were prepared and characterized. For the purpose of nanocomposite preparation, silver NPs with an average size of 28 nm prepared by modified Tollens process were used. Nanocomposites were prepared using poly(diallyldimethylammonium) chloride (PDDA) as an interlayer substance between diatomite and silver NPs which enables to change diatomite original negative surface charge to positive one. Due to strong electrostatic interactions between negatively charged silver NPs and positively charged PDDA-modified diatomite, Ag/PDDA diatomite nanocomposites with a high content of silver (as high as 46.6 mg Ag per 1 g of diatomite) were prepared. Because of minimal release of silver NPs from prepared nanocomposites to aqueous media ({ 0.3 mg Ag per 1 g of nanocomposite), the developed nanocomposites are regarded as a potential useful antimicrobial material with a long-term efficiency showing no risk to human health or environment. All the prepared nanocomposites exhibit a high bactericidal activity against Gram-negative and Gram-positive bacteria and fungicidal activity against yeasts at very low concentrations as low as 0.11 g/L, corresponding to silver concentration of 5 mg/L. Hence, the prepared nanocomposites constitute a promising candidate suitable for the microbial water treatment in environmental applications.
dcterms:title
Preparation, characterization and antimicrobial efficiency of Ag/PDDA-diatomite nanocomposite Preparation, characterization and antimicrobial efficiency of Ag/PDDA-diatomite nanocomposite
skos:prefLabel
Preparation, characterization and antimicrobial efficiency of Ag/PDDA-diatomite nanocomposite Preparation, characterization and antimicrobial efficiency of Ag/PDDA-diatomite nanocomposite
skos:notation
RIV/61989592:15110/13:33146889!RIV14-TA0-15110___
n6:predkladatel
n9:orjk%3A15110
n4:aktivita
n12:S n12:P
n4:aktivity
P(EE2.3.20.0056), P(EE2.3.20.0058), P(GAP304/10/1316), P(TE01020218), S
n4:cisloPeriodika
OCT
n4:dodaniDat
n11:2014
n4:domaciTvurceVysledku
n16:9664394 n16:1267671
n4:druhVysledku
n13:J
n4:duvernostUdaju
n5:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
98968
n4:idVysledku
RIV/61989592:15110/13:33146889
n4:jazykVysledku
n15:eng
n4:klicovaSlova
nanocomposite, diatomaceous earth, silver nanoparticles, antimicrobial, water treatment
n4:klicoveSlovo
n7:antimicrobial n7:water%20treatment n7:silver%20nanoparticles n7:nanocomposite n7:diatomaceous%20earth
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[DA0642303EE7]
n4:nazevZdroje
Colloids and Surfaces B: Biointerfaces
n4:obor
n18:CF
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
10
n4:projekt
n8:TE01020218 n8:EE2.3.20.0058 n8:GAP304%2F10%2F1316 n8:EE2.3.20.0056
n4:rokUplatneniVysledku
n11:2013
n4:svazekPeriodika
110
n4:tvurceVysledku
Kvítek, Libor Večeřová, Renata Zbořil, Radek Pechoušek, Jiří Balzerová, Anna Prucek, Robert Panáček, Aleš Ranc, Václav Filip, Jan Husičková, Vendula
n4:wos
000321940200026
s:issn
0927-7765
s:numberOfPages
8
n20:doi
10.1016/j.colsurfb.2013.04.031
n10:organizacniJednotka
15110