About: Photocatalytic reactions of nanocomposite of ZnS nanoparticles and montmorillonite

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About: Photocatalytic reactions of nanocomposite of ZnS nanoparticles and montmorillonite Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	ZnS nanoparticles stabilized by cetyltrimethylammonium bromide (CTAB) were deposited on montmorillonite (MMT) forming a ZnS–CTA–MMT nanocomposite. The nanocomposite was characterized by scanning electron microscopy (SEM), Fourier transformed infrared (FTIR) and UV diffuse reflectance spectra (DRS) spectrometry, X-ray powder diffraction (XRD) and specific surface area measurements. Thereafter, it was used for photocatalytic reactions under UV irradiation (Hg lamp) in three different reaction media with different pH: NaOH solution, HCl solution and water. Prior to the photocatalytic reactions the dispersions were saturated by carbon dioxide to buffer the systems. The main reaction products in gas phase determined by gas chromatography were hydrogen and methane. The reactions were monitored by measuring oxidation–reduction potentials. The highest yields of hydrogen were obtained in the dispersion acidified by HCl but the concentrations of methane were similar in all tested media. Hydrogen was supposed to be formed by the reaction of two hydrogen radicals. Methane was formed by the reduction of carbon dioxide and by the partial decomposition of CTAB. ZnS nanoparticles stabilized by cetyltrimethylammonium bromide (CTAB) were deposited on montmorillonite (MMT) forming a ZnS–CTA–MMT nanocomposite. The nanocomposite was characterized by scanning electron microscopy (SEM), Fourier transformed infrared (FTIR) and UV diffuse reflectance spectra (DRS) spectrometry, X-ray powder diffraction (XRD) and specific surface area measurements. Thereafter, it was used for photocatalytic reactions under UV irradiation (Hg lamp) in three different reaction media with different pH: NaOH solution, HCl solution and water. Prior to the photocatalytic reactions the dispersions were saturated by carbon dioxide to buffer the systems. The main reaction products in gas phase determined by gas chromatography were hydrogen and methane. The reactions were monitored by measuring oxidation–reduction potentials. The highest yields of hydrogen were obtained in the dispersion acidified by HCl but the concentrations of methane were similar in all tested media. Hydrogen was supposed to be formed by the reaction of two hydrogen radicals. Methane was formed by the reduction of carbon dioxide and by the partial decomposition of CTAB. (en)
Title	Photocatalytic reactions of nanocomposite of ZnS nanoparticles and montmorillonite Photocatalytic reactions of nanocomposite of ZnS nanoparticles and montmorillonite (en)
skos:prefLabel	Photocatalytic reactions of nanocomposite of ZnS nanoparticles and montmorillonite Photocatalytic reactions of nanocomposite of ZnS nanoparticles and montmorillonite (en)
skos:notation	RIV/61989100:27730/13:86088404!RIV14-GA0-27730___
http://linked.open...avai/predkladatel	Centrum energetického využití netradičních zdrojů energie
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED0040/01/01), P(ED2.1.00/03.0069), P(GAP107/11/1918)
http://linked.open...iv/cisloPeriodika	15 June
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kočí, Kamila Reli, Martin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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 / Centrum energetického využití netradičních zdrojů energie
http://linked.open...dnocenehoVysledku	96081
http://linked.open...ai/riv/idVysledku	RIV/61989100:27730/13:86088404
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ZnS nanoparticles, Nanocomposite, Montmorillonite, Photocatalysis (en)
http://linked.open.../riv/klicoveSlovo	Photocatalysis Montmorillonite ZnS nanoparticles Nanocomposite
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[6769389A0AE8]
http://linked.open...i/riv/nazevZdroje	Applied Surface Science
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Regional materials science and technology centre ENET - Energy Units for Utilization of non Traditional Energy Sources Research of the zinc and cadmium sulphide nanoparticles deposited on phyllosilicates for the photocatalytic reduction of carbon dioxide
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	275
http://linked.open...iv/tvurceVysledku	Kočí, Kamila Obalová, Lucie Praus, Petr Reli, Martin
http://linked.open...ain/vavai/riv/wos	000318977300057
issn	0169-4332
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.apsusc.2012.11.155
http://localhost/t...ganizacniJednotka	27730

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