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.
Author details: | Carmen Tiseanu, Victor A. Lorenz-Fonfria, André Geßner, Michael Uwe KumkeORCiDGND, Bogdan Gagea |
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URL: | http://www.springerlink.com/content/100190 |
DOI: | https://doi.org/10.1007/s10854-008-9597-1 |
ISSN: | 0957-4522 |
Publication type: | Article |
Language: | English |
Year of first publication: | 2009 |
Publication year: | 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 |