International Journal of Photoenergy (Jan 2003)

Incorporation of silver (I) ions within zeolite cavities and their photocatalytic reactivity for the decomposition of N2O into N2 and O2

  • Woo-Sung Ju,
  • Masaya Matsuoka,
  • Masakazu Anpo

DOI
https://doi.org/10.1155/S1110662X03000060
Journal volume & issue
Vol. 5, no. 1
pp. 17 – 19

Abstract

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Ag+/ZSM-5 catalysts were prepared by an ion-exchange method. UV-irradiation of the Ag+/ZSM-5 catalysts in the presence of N2O led to the photocatalytic decomposition of N2O into N2 and O2 at 298 K. Investigations of the effective wavelength of the irradiated UV-light for the reaction as well as the in-situ characterization of the catalysts by means of UV-Vis, photoluminescence and FT-IR spectroscopies revealed that the photoexcitation of the Ag+ − N2O complexes formed between gaseous N2O and the isolated Ag+ ions exchanged within the zeolite cavities plays a significant role in the reaction.