Protonation of methylene blue and its intercalation into montmorillonite.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F09%3A00022145" target="_blank" >RIV/61989100:27360/09:00022145 - 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

Protonation of methylene blue and its intercalation into montmorillonite.

Popis výsledku v původním jazyce

The protonation of methylene blue (MB) was studied in variously acid aqueous solutions using Vis spectrophotometry. The cations of MB present in acid aqueous solutions, i.e. MB+, (MB+)n and MBH2+, were intercalated into Ca-montmorillonite (SAz-1). Adsorbed amounts of dye were evaluated by Vis spectrophotometry at two wavelengths; at 675 nm (monomeric form MB+) and at 748 nm (protonated form MBH2+). By this way two independent measurements of equilibrium dye concentration in acid aqueous solutions were obtained and used for the evaluation of the adsorbed amount of methylene blue into SAz-1. Adsorption curves determined in acid aqueous solutions consist of two separated steps whereas the adsorption curve determined in neutral aqueous solution has only one step. Intercalated MB/SAz-1 samples were studied using X-ray powder diffraction method and SEM. It was found that the first step of adsorption curve relates to ion exchange of MB cations with interlayer Ca2+ cations and the second one r

Název v anglickém jazyce

Protonation of methylene blue and its intercalation into montmorillonite.

Popis výsledku anglicky

The protonation of methylene blue (MB) was studied in variously acid aqueous solutions using Vis spectrophotometry. The cations of MB present in acid aqueous solutions, i.e. MB+, (MB+)n and MBH2+, were intercalated into Ca-montmorillonite (SAz-1). Adsorbed amounts of dye were evaluated by Vis spectrophotometry at two wavelengths; at 675 nm (monomeric form MB+) and at 748 nm (protonated form MBH2+). By this way two independent measurements of equilibrium dye concentration in acid aqueous solutions were obtained and used for the evaluation of the adsorbed amount of methylene blue into SAz-1. Adsorption curves determined in acid aqueous solutions consist of two separated steps whereas the adsorption curve determined in neutral aqueous solution has only one step. Intercalated MB/SAz-1 samples were studied using X-ray powder diffraction method and SEM. It was found that the first step of adsorption curve relates to ion exchange of MB cations with interlayer Ca2+ cations and the second one r

Druh

D - Stať ve sborníku

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA205%2F08%2F0869" target="_blank" >GA205/08/0869: Jílové minerály jako hostitelské matrice pro funkční nanostruktury</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

International doctoral seminar

ISBN

978-80-8096-088-9

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

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Název nakladatele

Slovenská technická univerzita v Bratislavě

Místo vydání

Bratislava

Místo konání akce

Smolenice

Datum konání akce

17. 5. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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