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Preparation and characterization of ZnS nanoparticles deposited on montmorillonite

SYSNO ASEP	0358016
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Preparation and characterization of ZnS nanoparticles deposited on montmorillonite
Author(s)	Kozák, O. (CZ) Praus, P. (CZ) Kočí, K. (CZ) Klementová, Mariana (UACH-T)_{RID, SAI, ORCID}
Source Title	Journal of Colloid and Interface Science. - : Elsevier - ISSN 0021-9797 Roč. 352, č. 2 (2010), s. 244-251
Number of pages	8 s.
Language	eng - English
Country	US - United States
Keywords	ZnS nanoparticles ; montmorillonite ; photoluminescence ; photocatalysis ; carbon dioxide
Subject RIV	CA - Inorganic Chemistry
CEZ	AV0Z40320502 - UACH-T (2005-2011)
UT WOS	000284180100004
DOI	10.1016/j.jcis.2010.09.016
Annotation	ZnS nanoparticles were prepared and deposited on montmorillonite (MMT) in the presence of cetyltri-methylammonium (CTA) UV spectrometry and transmission electron microscopy (TEM) proved the formation of nanoparticles with diameters ranging from 3 nm to 5 nm Selected area electron diffraction (SAED) patterns revealed the presence of romboedric ZnS The band gap energy of nanosize ZnS was estimated at 3 89 +/- 0 03 eV Photoluminescence spectra exhibited a strong emission band between 300 nm and 600 nm explained by the vacant ZnS nanostructure. The prepared ZnS-montmorillonite nanocomposite (ZnS-MMT) was used for the photocatalytic reduction of CO2 providing a considerably high efficiency that exceeded 5-6 fold the results of commercial TiO2 Degussa P25. The stability of ZnS against oxidation was confirmed by the determination of sulphate using capillary isotachophoresis.
Workplace	Institute of Inorganic Chemistry
Contact	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Year of Publishing	2011

Number of the records: 1