Energy transfer characteristics of the hydrogen peroxide induced Ce3+-Ce4+ mixture

Ozen, Gönül; DEMIRATA, Birsen

doi:10.1016/s1386-1425(00)00237-7

Energy transfer characteristics of the hydrogen peroxide induced Ce3+-Ce4+ mixture

Atıf İçin Kopyala

Ozen G., DEMIRATA B.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.56, sa.9, ss.1795-1800, 2000 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 56 Sayı: 9
Basım Tarihi: 2000
Doi Numarası: 10.1016/s1386-1425(00)00237-7
Dergi Adı: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1795-1800
İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Luminescence of Ce3+ in the hydrogen peroxide induced sulfuric acid solutions was observed to be quenched by Ce4+ ions in the solution by energy transfer due to electric dipole interaction between Ce3+ and Ce4+. A systematic investigation of the energy transfer characteristics of Ce3+-Ce4+ mixture has been made by measuring the absorption, luminescence and excitation spectra at room temperature. The effect, of the concentration of Ce3+ on the energy transfer process has been also studied and the critical transfer distance (R-o) has been calculated considering Forster type interaction between the ions and found to be 8.7 Angstrom for the mixture of 1 x 10(-4) mol l(-1) Ce3+ and 3 x 10(-4) mol l(-1) Ce4+. (C) 2000 Elsevier Science B.V. All rights reserved.