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Embedment of Methylene Blue in natural and synthetic phillipsite

Published online by Cambridge University Press:  02 January 2018

Stanisław Kowalak ,
Małgorzata Szyld ,
Aldona Jankowska ,
Alina Zalewska ,
Abner Colella  and
Bruno de Gennaro
Stanisław Kowalak*
Affiliation:
A. Mickiewicz University, Faculty of Chemistry, Poznań, Poland
Małgorzata Szyld
Affiliation:
A. Mickiewicz University, Faculty of Chemistry, Poznań, Poland
Aldona Jankowska
Affiliation:
A. Mickiewicz University, Faculty of Chemistry, Poznań, Poland
Alina Zalewska
Affiliation:
A. Mickiewicz University, Faculty of Chemistry, Poznań, Poland
Abner Colella
Affiliation:
University of Naples, Federico II, DiSTAR, Italy
Bruno de Gennaro
Affiliation:
University of Naples, Federico II, Department ofChemical and Materials Engineering and Industrial Production, Italy
*
*E-mail: [email protected]
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Abstract

Phillipsite was crystallized from a high siliceous aluminosilicate mixture containing Zn cations and methylene blue (MB). The presence of MB did not affect the crystallization, but it resulted in a substantial amount of dye being anchored to the zeolite, despite its narrow channels. Dye-free synthetic phillipsite modified with MB solution showed markedly lower dye content, which, however was considerably higher than those in the MB-treated natural phillipsite and mordenite. The ultra violet/visible (UV-vis) spectra of the dye-modified synthetic phillipsites indicated the presence of MB monomers and oligomers, whereas the spectra of the modified natural zeolites showed protonated MB also. The electron spin resonance spectra of samples crystallized with MB indicated the presence of paramagnetic species.

Keywords

Methylene Bluedye encapsulationzeolitephillipsitemordenite
Type
Research Article
Information
Clay Minerals , Volume 50 , Issue 1 , March 2015 , pp. 23 - 30
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2015

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