About: Preparation of Composite of ZnS Nanoparticles and Montmorillonite by Cavitation Deposition

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Physics and chemistry of very small particles emanate from a long-term tradition of colloidal chemistry. An important area of contemporary nanotechnologies is preparation of nanoparticles with size lower than 100 nm by top-down and bottom-up methods. Bottom-up methods turned out to be more suitable for preparation of nanoparticles than methods based of various chemical reactions. In our previous works we referred about preparation of ZnS nanoparticles with size about 3-5 nm stabilized by cationic surfactants like cetyltrimethylammonium bromide (CTAB) in aqueous dispersions by chemical precipitation of zinc acetate and sodium sulphide. CTAB was found to significantly influence size of ZnS nanoparticles. A basic requirement for their photocatalytic properties is maximal reactive surface area. For practical manipulation these nanoparticles were deposited on caring larger particles which formed dray powders. In this work, a new method for preparation of composite of ZnS nanoparticles and montmorillonite ZnS-MMT in aqueous environment is presented. The ZnS-MMT nanocomposite was formed by cavitation implosion of ZnS nanoparticles into MMT pores. As a result of very high impact velocities at collisions of ZnS nanoparticles and MMT particles increase of a number of ZnS nanoparticles in ZnS-MMT can be expected. Physics and chemistry of very small particles emanate from a long-term tradition of colloidal chemistry. An important area of contemporary nanotechnologies is preparation of nanoparticles with size lower than 100 nm by top-down and bottom-up methods. Bottom-up methods turned out to be more suitable for preparation of nanoparticles than methods based of various chemical reactions. In our previous works we referred about preparation of ZnS nanoparticles with size about 3-5 nm stabilized by cationic surfactants like cetyltrimethylammonium bromide (CTAB) in aqueous dispersions by chemical precipitation of zinc acetate and sodium sulphide. CTAB was found to significantly influence size of ZnS nanoparticles. A basic requirement for their photocatalytic properties is maximal reactive surface area. For practical manipulation these nanoparticles were deposited on caring larger particles which formed dray powders. In this work, a new method for preparation of composite of ZnS nanoparticles and montmorillonite ZnS-MMT in aqueous environment is presented. The ZnS-MMT nanocomposite was formed by cavitation implosion of ZnS nanoparticles into MMT pores. As a result of very high impact velocities at collisions of ZnS nanoparticles and MMT particles increase of a number of ZnS nanoparticles in ZnS-MMT can be expected. (en)
Title	Preparation of Composite of ZnS Nanoparticles and Montmorillonite by Cavitation Deposition Preparation of Composite of ZnS Nanoparticles and Montmorillonite by Cavitation Deposition (en)
skos:prefLabel	Preparation of Composite of ZnS Nanoparticles and Montmorillonite by Cavitation Deposition Preparation of Composite of ZnS Nanoparticles and Montmorillonite by Cavitation Deposition (en)
skos:notation	RIV/61989100:27710/14:86093466!RIV15-MSM-27710___
http://linked.open...avai/riv/aktivita	V
http://linked.open...avai/riv/aktivity	V
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Praus, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Institut environmentálních technologií
http://linked.open...dnocenehoVysledku	39025
http://linked.open...ai/riv/idVysledku	RIV/61989100:27710/14:86093466
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	vacuum freeze-drying; photocatalytic; core-shell; ZnS; silicon; nanoparticle (en)
http://linked.open.../riv/klicoveSlovo	ZnS core-shell silicon nanoparticle photocatalytic vacuum freeze-drying
http://linked.open...ontrolniKodProRIV	[CF456838E596]
http://linked.open...v/mistoKonaniAkce	Washington
http://linked.open...i/riv/mistoVydani	Washington
http://linked.open...i/riv/nazevZdroje	Technical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
http://linked.open...in/vavai/riv/obor	JJ
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Dvorský, Richard Praus, Petr Študentová, Soňa Svoboda, Ladislav Kostura, Bruno
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2014-06-15 (xsd:date)
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Nano Science and Technology Institute
https://schema.org/isbn	978-1-4822-5830-1
http://localhost/t...ganizacniJednotka	27710

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