Preparation and characterization of ZnS nanoparticles deposited on montmorillonite

被引：69

作者：

Kozak, Ondrej

Praus, Petr

Koci, Kamila ^{[1
]}

Klementova, Mariana

机构：

[1] Tech Univ Ostrava, VSB, Dept Phys Chem & Theory Technol Proc, Ostrava 70833, Poruba, Czech Republic

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 352卷 / 02期

关键词：

ZnS nanoparticles; Montmorillonite; Photoluminescence; Photocatalysis; Carbon dioxide; CARBON-DIOXIDE; PHOTOCATALYTIC REDUCTION; QUANTUM CRYSTALLITES; ZINC-SULFIDE; PHOTOREDUCTION; CO2; PHOTOLUMINESCENCE; SIZE; NANOCRYSTALLITES; PARTICLES;

D O I：

10.1016/j.jcis.2010.09.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 CO(2) providing a considerably high efficiency that exceeded 5-6 fold the results of commercial TiO(2) Degussa P25 The main reaction products were hydrogen and methane Methanol and carbon oxide were also observed in about 7 fold lower amounts The stability of ZnS against oxidation was confirmed by the determination of sulphate using capillary isotachophoresis (C) 2010 Elsevier Inc All rights reserved

引用

页码：244 / 251

页数：8

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