Local structure of Pb (II) ion catalysts anchored within zeolite cavities and their photocatalytic reactivity for the elimination of N 2 O

The Pb 2+ /ZSM-5 catalyst was prepared by an ion-exchange method and its photocatalytic activity for the decomposition of N 2 O under UV irradiation was investigated. In-situ UV-Vis absorption spectroscopy and XAFS (XANES and FT-EXAFS) investigations revealed that the Pb 2+ ions exist in a highly di...

Full description

Saved in:
Bibliographic Details
Published in:Journal of synchrotron radiation 2001-03, Vol.8 (2), p.608-609
Main Authors: Ju, Woo-Sung, Matsuoka, Masaya, Yamashita, Hiromi, Anpo, Masakazu
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Pb 2+ /ZSM-5 catalyst was prepared by an ion-exchange method and its photocatalytic activity for the decomposition of N 2 O under UV irradiation was investigated. In-situ UV-Vis absorption spectroscopy and XAFS (XANES and FT-EXAFS) investigations revealed that the Pb 2+ ions exist in a highly dispersed state within the pores of the zeolites. UV irradiation of the catalysts in the presence of N 2 O led to the photocatalytic decomposition of N 2 O into N 2 at temperatures as low as 298K. The effective wavelength of the irradiated UV light indicated that the excited state of the Pb 2+ ions included within the zeolite cavities plays a significant role in the photocatalytic decomposition of N 2 O molecules.
ISSN:0909-0495
DOI:10.1107/S0909049500017477