Heterogeneous chemiluminescence of crystalline phosphors in products of dissociation of sulfur dioxide

V. V. Styrov, N. D. Tolmatcheva, Yu I. Tyurin, S. H. Shygalugov

Research output: Contribution to journalArticle

Abstract

A luminescence has been revealed for the first time when SO is oxidized on the Y2O2S-Eu surface. Kinetic and spectral characteristics of heterogeneous chemiluminescence (HCL) have been studied. A model explaining the features of HCL has been proposed. In addition to reactions of adsorption, oxidation, and desorption, this model takes into consideration the reactions of the atomic-molecular exchange O + SO2-L → SO-L + O2 and dissociation SO2-L + Vas → SO-L, where L is the lattice symbol, Vas is the vacancy coming to the surface by diffusion. A mechanism of heterogeneous chemiluminescence has been discussed. It comprises the energy transfer to the center of luminescence according to the reaction SO2 e-L + Eu3+ → SO2-L + (Eu3+)e; (Eu3+)e → Eu3+ + hv, where SO2 e-L is the electron-excited SO2-L molecule. The spectrum of HCL Y2O2S-Eu is linear being typical of intracenter transitions in the f-shell of Eu3+. The lines of CHL are broadened as compared to the lines of photoluminescence.

Original languageEnglish
Pages (from-to)669-680
Number of pages12
JournalSurface Investigation X-Ray, Synchrotron and Neutron Techniques
Volume16
Issue number4
Publication statusPublished - 2001

Fingerprint

Sulfur Dioxide
Chemiluminescence
sulfur dioxides
chemiluminescence
Sulfur dioxide
Phosphors
phosphors
dissociation
Crystalline materials
products
Luminescence
luminescence
Crystal lattices
Energy transfer
Vacancies
Desorption
Photoluminescence
desorption
energy transfer
photoluminescence

ASJC Scopus subject areas

  • Surfaces and Interfaces

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Heterogeneous chemiluminescence of crystalline phosphors in products of dissociation of sulfur dioxide. / Styrov, V. V.; Tolmatcheva, N. D.; Tyurin, Yu I.; Shygalugov, S. H.

In: Surface Investigation X-Ray, Synchrotron and Neutron Techniques, Vol. 16, No. 4, 2001, p. 669-680.

Research output: Contribution to journalArticle

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AU - Shygalugov, S. H.

PY - 2001

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AB - A luminescence has been revealed for the first time when SO is oxidized on the Y2O2S-Eu surface. Kinetic and spectral characteristics of heterogeneous chemiluminescence (HCL) have been studied. A model explaining the features of HCL has been proposed. In addition to reactions of adsorption, oxidation, and desorption, this model takes into consideration the reactions of the atomic-molecular exchange O + SO2-L → SO-L + O2 and dissociation SO2-L + Vas → SO-L, where L is the lattice symbol, Vas is the vacancy coming to the surface by diffusion. A mechanism of heterogeneous chemiluminescence has been discussed. It comprises the energy transfer to the center of luminescence according to the reaction SO2 e-L + Eu3+ → SO2-L + (Eu3+)e; (Eu3+)e → Eu3+ + hv, where SO2 e-L is the electron-excited SO2-L molecule. The spectrum of HCL Y2O2S-Eu is linear being typical of intracenter transitions in the f-shell of Eu3+. The lines of CHL are broadened as compared to the lines of photoluminescence.

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