Effect of layer charge and dye loading on spectroscopic properties of cationic dye/montmorillonite complexes.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F10%3A86076243" target="_blank" >RIV/61989100:27360/10:86076243 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of layer charge and dye loading on spectroscopic properties of cationic dye/montmorillonite complexes.

Popis výsledku v původním jazyce

Aggregation of methylene blue (MB), crystal violet (CV), nile blue (NB) and rhodamine B (RB) in aqueous solution were studied and percentage distribution of their species (monomer, dimer, trimer and tetramer) in variously concentrated aqueous solutions was calculated. Ca2+-montmorillonite with high layer charge (SAz-1) and reduced charge (RC-SAz(210)) were saturated with the cationic dyes (CD). The prepared cationic dye/montmorillonite complexes were analysed using fluorescence and Vis electron spectroscopy. The Vis electron spectra of fully saturated CD/SAz complexes revealed the presence of higher aggregates, which cause quenching of fluorescence. A huge increase of fluorescence was observed in CD/RC-SAz(210) complexes where mainly monomers and/or dimers of cationic dye are formed. Suppression of dye aggregation in these complexes was due to reduction of montmorillonite layer charge and low dye loading.

Název v anglickém jazyce

Effect of layer charge and dye loading on spectroscopic properties of cationic dye/montmorillonite complexes.

Popis výsledku anglicky

Aggregation of methylene blue (MB), crystal violet (CV), nile blue (NB) and rhodamine B (RB) in aqueous solution were studied and percentage distribution of their species (monomer, dimer, trimer and tetramer) in variously concentrated aqueous solutions was calculated. Ca2+-montmorillonite with high layer charge (SAz-1) and reduced charge (RC-SAz(210)) were saturated with the cationic dyes (CD). The prepared cationic dye/montmorillonite complexes were analysed using fluorescence and Vis electron spectroscopy. The Vis electron spectra of fully saturated CD/SAz complexes revealed the presence of higher aggregates, which cause quenching of fluorescence. A huge increase of fluorescence was observed in CD/RC-SAz(210) complexes where mainly monomers and/or dimers of cationic dye are formed. Suppression of dye aggregation in these complexes was due to reduction of montmorillonite layer charge and low dye loading.

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název statě ve sborníku

International doctoral seminar

ISBN

978-80-8096-118-3

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

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Název nakladatele

Slovenská technická univerzita v Bratislavě

Místo vydání

Bratislava

Místo konání akce

Smolenice

Datum konání akce

16. 5. 2010

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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