Nanosecond probing of the early nucleation steps of silver atoms in colloidal zeolite by pulse radiolysis and flash photolysis techniques

Nanosecond probing of the early nucleation steps of silver atoms in colloidal zeolite by pulse... The process of formation and the subsequent aggregation of silver atoms (Ag0) in nanosized zeolite beta (BEA) are studied by transient absorption spectroscopy. The zeolite nanocrystals are stabilized in aqueous colloidal suspensions with a narrow particle size distribution in the range 30–60 nm. The reduction of silver cations is initiated either by pulse radiolysis of the aqueous suspension or by photoinduced electron transfer using an organic electron donor adsorbed in the zeolite framework. The silver atom in BEA nanosized crystals is found to be stable on the microsecond timescale. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Nanosecond probing of the early nucleation steps of silver atoms in colloidal zeolite by pulse radiolysis and flash photolysis techniques

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Publisher
Springer Netherlands
Copyright
Copyright © 2009 by Springer Science+Business Media BV
Subject
Chemistry; Inorganic Chemistry ; Physical Chemistry ; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-009-0049-1
Publisher site
See Article on Publisher Site

Abstract

The process of formation and the subsequent aggregation of silver atoms (Ag0) in nanosized zeolite beta (BEA) are studied by transient absorption spectroscopy. The zeolite nanocrystals are stabilized in aqueous colloidal suspensions with a narrow particle size distribution in the range 30–60 nm. The reduction of silver cations is initiated either by pulse radiolysis of the aqueous suspension or by photoinduced electron transfer using an organic electron donor adsorbed in the zeolite framework. The silver atom in BEA nanosized crystals is found to be stable on the microsecond timescale.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jun 9, 2009

References

  • CU-ZSM-5 zeolite as highly active catalyst for removal of nitrogen monoxide from emission of diesel engines
    Sato, S; Yu-u, Y; Yahiro, H; Mizuno, N; Iwamoto, M
  • Characterization of highly active silver catalyst for NOx reduction in lean-burning engine exhaust
    Aoyama, N; Yoshida, K; Abe, A; Miyadera, T
  • Diverse copper clusters confined in microporous nanocrystals
    Waele, V; Kecht, J; Tahri, Z; Mostafavi, M; Bein, T; Mintova, S

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