Abstract
The 248 nm excitation of zeolites results in the formation of trapped electrons which are very sensitive to photoexcitation and the amount of water contained in zeolites. Na43+, Na32+, and Na2+, which are prepared by 248 nm single-photon excitation, are directly confirmed as electron trapping states by nanosecond diffuse reflectance spectroscopy. Their stability decreases in the order of Na43+ > Na3+ < Na2+ in terms of the observed lifetimes of these trapped species. Water accelerates recombination between trapped electrons and the electron-ejected sites in the zeolite frameworks. Photoinduced conversion processes between these ion clusters were measured directly by double-pulse excitation experiments.
Original language | English |
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Pages (from-to) | 3365-3369 |
Number of pages | 5 |
Journal | Journal of Physical Chemistry B |
Volume | 101 |
Issue number | 17 |
DOIs | |
Publication status | Published - 1997 Apr 24 |
Externally published | Yes |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry