Optical and FT Infrared spectral studies of vanadium ions in cadmium borate glass and effects of gamma irradiation

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Date

2014

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Volume Title

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Article

Publisher

European Journal of Economics, Finance and Administrative Sciences
Elsevier

Series Info

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
131

Scientific Journal Rankings

Abstract

Combined optical and infrared absorption spectra of V2O 5-doped cadmium borate glasses were investigated before and after gamma irradiation with a dose of 8 Mrad (=8 � 104 Gy). The undoped base cadmium borate glass reveals a spectrum consisting of strong charge transfer UV absorption bands which are related to the presence of unavoidable contaminated trace iron impurities (mainly Fe3+). The V 2O5-doped glasses reveal an extra band at 380 nm and the high V2O5-content glass also shows a further band at about 420 nm. The observed optical spectrum indicates the presence of vanadium ions mainly in the pentavalent state (d0 configuration). The surplus band at 420 nm shows that some trivalent vanadium ions are identified at high V 2O5 content. The optical spectra of the glasses after gamma irradiation show small decrease of the intensity of the UV absorption which are interpreted by assuming the transformation of some Fe3+ ions by photochemical reactions with the presence of high content (45 mol%) of heavy massive CdO causing some shielding behavior. FT infrared absorption spectra of the glasses show vibrational bands due to collective presence of triangular and tetrahedral borate groups in their specific wavenumbers. The FTIR spectra are observed to be slightly affected by both the V2O 5-dopants being present in modifying low percent or gamma irradiation due to the presence of high content heavy CdO. � 2014 Elsevier B.V. All rights reserved.

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Keywords

October University for Modern Sciences and Arts, University for Modern Sciences and Arts, MSA University, جامعة أكتوبر للعلوم الحديثة والآداب, October University for Modern Sciences and Arts, جامعة أكتوبر للعلوم الحديثة والآداب, University of Modern Sciences and Arts, MSA University, Cadmium borate glass, FTIR, Gamma irradiation, UV/Vis, Cadmium, Fourier transform infrared spectroscopy, Gamma rays, Glass, Ions, Light absorption, Photochemical reactions, Spectroscopic analysis, Vanadium, Borate glass, FT-IR spectrum, FTIR, Gamma irradiation, Iron impurities, Optical spectra, UV/Vis, Vibrational bands, Cadmium compounds, boric acid, cadmium, glass, ion, vanadium, vanadium derivative, vanadium pentoxide, chemistry, gamma radiation, infrared spectroscopy, radiation response, ultraviolet spectrophotometry, Borates, Cadmium, Gamma Rays, Glass, Ions, Spectrophotometry, Ultraviolet, Spectroscopy, Fourier Transform Infrared, Vanadium, Vanadium Compounds

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