Precipitation, stabilization and molecular modeling of ZnS nanoparticles in the presence of cetyltrimethylammonium bromide

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10128555" target="_blank" >RIV/00216208:11320/12:10128555 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jcis.2012.03.073" target="_blank" >http://dx.doi.org/10.1016/j.jcis.2012.03.073</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcis.2012.03.073" target="_blank" >10.1016/j.jcis.2012.03.073</a>

Result language
angličtina
Original language name
Precipitation, stabilization and molecular modeling of ZnS nanoparticles in the presence of cetyltrimethylammonium bromide
Original language description
ZnS nanoparticles were precipitated in aqueous dispersions of cationic surfactant cetyltrimethylammonium bromide (CTAB). The sphere radii of ZnS nanoparticles calculated by using band-gap energies steeply decreased from 4.5 nm to 2.2 nm within CTAB concentrations of 0.4-1.5 mmol L-1. Above the concentration of 1.5 mmol L-1, the radii were stabilized at R = 2.0 nm and increased up to R = 2.5 nm after 24 h. The hydrodynamic diameters of ZnS-CTAB structures observed by the dynamic light scattering (DLS) method ranged from 130 nm to 23 nm depending on CTAB concentrations of 0.5-1.5 mmol L-1. The complex structures were observed by scanning electron microscopy (SEM). At the higher CTAB concentrations, ZnS nanoparticles were surrounded by CTA(+) bilayers forming positively charged micelles with the diameter of 10 nm. The positive zeta-potentials of the micelles and their agglomerates were from 16 mV to 33 mV. Wurtzite and sphalerite nanoparticles with R = 2.0 nm and 2.5 nm covered by CTA(+).
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Project
<a href="/en/project/GAP107%2F11%2F1918" target="_blank" >GAP107/11/1918: Research of the zinc and cadmium sulphide nanoparticles deposited on phyllosilicates for the photocatalytic reduction of carbon dioxide</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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