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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F12%3A86083741" target="_blank" >RIV/61989100:27350/12:86083741 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/12:86083741

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 hours. The hydrodynamic diameters of CTAB-ZnS 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+ we

Název v anglickém jazyce

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

Popis výsledku anglicky

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 hours. The hydrodynamic diameters of CTAB-ZnS 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+ we

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of colloid and interface science

ISSN

0021-9797

e-ISSN

—

Svazek periodika

377

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

58-63

Kód UT WoS článku

000304432400009

EID výsledku v databázi Scopus

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