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Comparative luminescence study of terbium-exchanged zeolites silylated with alkoxysilanes

  • Terbium-exchanged ZSM-5, MOR and (H)BEA zeolites were silylated with phenyl-, vinyl- and hexadecyl trimethoxysilanes via a post-synthesis grafting. All samples were investigated by means of PXRD, FT-IR, TGA, physical adsorption, DR-UV-Vis and time-resolved photoluminescence spectroscopy. From the comparison of the photoluminescence decays of terbium-exchanged in parent (non-silylated) and silylated zeolites, it resulted that the silylation efficiency of the various alkoxysilanes is determined by the type of zeolite and follows the sequences: phenyl > vinyl > hexadecyl > parent for ZSM-5, hexadecyl a parts per thousand phenyl a parts per thousand vinyl > parent for MOR and hexadecyl > phenyl a parts per thousand vinyl > a parts per thousand parent for BEA zeolites, respectively.

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Author:Carmen Tiseanu, Victor A. Lorenz-Fonfria, André Geßner, Michael Uwe KumkeORCiDGND, Bogdan Gagea
Document Type:Article
Year of first Publication:2009
Year of Completion:2009
Release Date:2017/03/25
Source:Journal of material science : materials in electronics. - ISSN 0957-4522. - 20 (2009), Suppl. 1, S. 312 - 316
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie