Silver nanoparticles/montmorillonite composites prepared using nitrating reagent at water and glycerol

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Show simple item record Valášková, Marta Simha Martynková, Gražyna Lešková, Jana Čapková, Pavla Klemm, Volker Rafaja, David 2008-07-25T11:57:24Z 2008-07-25T11:57:24Z 2008
dc.identifier.citation Journal of nanoscience and nanotechnology. 2008, vol. 8, no. 6, p. 3050-3058. en
dc.identifier.issn 1533-4880
dc.description.abstract Three procedures (P) were applied to prepare silver nanoparticles on natural Ca-montmorillonite (MT). The intercalation of the montmorillonite with silver nitrate in aqueous solution (P1), the intercalation of the montmorillonite with silver nitrate in glycerol (P2) and the successive combination of both P1 and P2methods resulted to P3 method. X-ray powder diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) and Fourier Transform Infrared (FTIR) spectroscopy and the molecular modeling were employed to characterize silver nanoparticles and montmorillonite nanocomposite. The P1 produced MT-1 composite with 2.3 wt% Ag and the partially collapsed layered structure. Nanoparticles of silver larger than 20 nm with a lot of planar defects were randomly distributed on the MT-1 surface; nanoparticles smaller than 20 nm were oriented to the montmorillonite substrate. The MT-2 composite from P2 contained only 1 wt% of Ag. The molecular simulation model of MT-2 showed the interlayer space with the exchangeable cations and metallic silver atoms arrangement within the glycerol bilayer. The P3 produced composite MT-3 that contained 2.4 wt% Ag. The nanoparticles > 20 nm size had a well-defined geometry, very small nanoparticles were amorphous. The modeled structure showed the exchangeable cations, Ag+ and Ag0 located close to the silicate layers and monolayer of glycerol molecules in the interlayer space. en
dc.language.iso en en
dc.publisher American Scientific Publishers en
dc.relation.ispartofseries Journal of nanoscience and nanotechnology en
dc.relation.uri en
dc.subject montmorillonite en
dc.subject silver en
dc.subject nanoparticles en
dc.subject x-ray diffraction en
dc.subject transmission electron microscopy en
dc.subject molecular modeling en
dc.title Silver nanoparticles/montmorillonite composites prepared using nitrating reagent at water and glycerol en
dc.type article en
dc.identifier.location Není ve fondu ÚK en
dc.identifier.doi 10.1166/jnn.2008.088
dc.identifier.wos 000257271600035

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