Optical properties of ZnS nanoparticles precipitated at various molar ratios of sulphide and zinc ions and stabilized by CTAB

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F12%3A86083744" target="_blank" >RIV/61989100:27350/12:86083744 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/12:86083744

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Optical properties of ZnS nanoparticles precipitated at various molar ratios of sulphide and zinc ions and stabilized by CTAB

Popis výsledku v původním jazyce

ZnS nanoparticles were precipitated by the reaction of zinc and sulphide ions in aqueous media and stabilized by cetyltrimethylammonium bromide (CTAB). The nanoparticles size (diameter) was calculated using the relationship between band-gap energy and radius as a result of the quantum size effect. Depending on the molar ratio of precursors S2-/Zn2+ = 0.25?2.0 and time elapsed from their preparation t = 0?5 h the nanoparticles with size of 3.5?4.8 nm were obtained. The absorption of UV radiation and photoluminescence (PL) of the nanoparticles dispersions were studied. The nanoparticles growth in the dependence of time and the S2-/Zn2+ ratio was indicated by changes in UV absorption and PL spectra. The stabilization effect of CTAB was observed for all S2-/Zn2+ ratios up to 5 hours. At the longer time intervals (3 a 4 days) flocs of the ZnS nanoparticles and CTAB were observed.

Název v anglickém jazyce

Optical properties of ZnS nanoparticles precipitated at various molar ratios of sulphide and zinc ions and stabilized by CTAB

Popis výsledku anglicky

ZnS nanoparticles were precipitated by the reaction of zinc and sulphide ions in aqueous media and stabilized by cetyltrimethylammonium bromide (CTAB). The nanoparticles size (diameter) was calculated using the relationship between band-gap energy and radius as a result of the quantum size effect. Depending on the molar ratio of precursors S2-/Zn2+ = 0.25?2.0 and time elapsed from their preparation t = 0?5 h the nanoparticles with size of 3.5?4.8 nm were obtained. The absorption of UV radiation and photoluminescence (PL) of the nanoparticles dispersions were studied. The nanoparticles growth in the dependence of time and the S2-/Zn2+ ratio was indicated by changes in UV absorption and PL spectra. The stabilization effect of CTAB was observed for all S2-/Zn2+ ratios up to 5 hours. At the longer time intervals (3 a 4 days) flocs of the ZnS nanoparticles and CTAB were observed.

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

Chalcogenide Letters

ISSN

1584-8663

e-ISSN

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Svazek periodika

9

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

RO - Rumunsko

Počet stran výsledku

7

Strana od-do

413-419

Kód UT WoS článku

000312712800003

EID výsledku v databázi Scopus

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