Gamma-rays interactions on optical, FTIR absorption and ESR spectra of 3d transition metals-doped sodium silicophosphate glasses

Abdelghany, A.M.; ElBatal, H.A.

doi:10.1016/j.molstruc.2014.03.032

Cited by 32 publications

(5 citation statements)

References 27 publications

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“…(c) Beyond 23.5 mol% of CKD content, the broadening of the intense envelops were decreased, i.e., formation of NBOs may be stopped and more bridging oxygens and covalent bonds will be created. So, the network structure will be more compacted and the mixed structural units are interlinked [16,17,47,48]. This process was confirmed with the constancy of the intensity of this region.…”

Section: Discussionsupporting

confidence: 58%

“…It was mentioned that shielding glasses had some disadvantages on subjection to long-term high-energy radiation doses, such as loss of transparency, discoloration, and fracture. Thus, special types of high dense HMOs-borate based glasses can be fabricated for this purpose to have the dual role of transparency to visible light and absorbing gamma rays active isotopes and neutrons to protect observers [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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FTIR spectroscopic features ofγ-ray influence on new cement kiln dust based glasses

et al. 2015

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A harmful environmental problem such as cement kiln dust (CKD) was considered as a source of CaO and SiO 2 , which are useful oxides for the glass industry. So, Na 2 O, B 2 O 3 , Bi 2 O 3 , PbO and CKD were used to fabricate new borate based glasses. The structure of the prepared glasses was studied by FTIR before and after gamma irradiation at doses up to 120 kGy. Analysis of FTIR before irradiation revealed that CKD split the characteristic broad band of the vibrations of BO 3 structural units into two bands and created two effective ranges of concentrations which were confirmed by N 4 calculations. After gamma irradiation, the intensity of the FTIR bands decreased and the structure of glass was weakened when 0 ⩽ CKD ⩽ 23.5 mol% as a result of energy transferred by gamma rays. Increasing CKD beyond this limit created bridging oxygens, more covalent bonds and interlinked the structural groups of the glass network which may resist the irradiation effects. The glass containing 32 mol% of CKD showed higher resistance for radiation effects which was attributed to its strong covalent bonds and to [BiO 6 ] and [PbO 6 ] structural units.

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Section: Discussionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

FTIR spectroscopic features ofγ-ray influence on new cement kiln dust based glasses

et al. 2015

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“…The corresponding ultraviolet-visible (UV-Vis) diffuse reflectance spectrums are presented in Figure S5. The spectrum of MM showed peaks at 279 and 499 nm, which were characteristic of Mn 3+ and Mn 4+ , respectively [33]. After introducing copper to form MCM, new bands appeared in the 320-to 450-nm regions and were evidence of the presence of Cu 2+ on the catalyst surface [34].…”

Section: Characterization Of MCMmentioning

confidence: 98%

Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO 2 : Combination of adsorption and catalysis oxidation

Zhang

Cao

et al. 2016

Applied Catalysis B: Environmental

226

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“…Transition metals-doped glasses have interesting optical, luminescent, semiconducting, memorizing, and photoconducting properties [11,12]. Manganese ion is an intriguing transition metal ion although it can be present in a number between valence states (Mn 3+ and Mn 2+ ) of different glass matrices [13].…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Effect of Manganese Ions on Spectroscopic and Insulating Properties of Aluminophosphate Glasses

Kassa

Tesfaye

Bulcha

et al. 2021

Advances in Materials Science and Engineering

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The melt-quenching technique was used to produce 39CdO–10Al2O3-(51-x) P2O5: xMnO glasses (x = 0, 0.1, 0.2, 0.3, and 0.4 wt.%). Various stability factors were calculated and presented from DTA analysis. The stability of the glass network appears to increase with the increase of MnO concentration, according to the findings. IR spectral analysis of these glasses exhibited several symmetrical and asymmetrical bands due to phosphate groups. The observed change in these band intensities with the rise in MnO concentrations, ranging from 0.1 wt.% to 0.4 wt.%, shows an increase in the stability of the glass network. Optical absorption analyses of these glasses revealed an absorption band that shifted from 500 to 488 nm as the concentration of manganese oxide (MnO) increased from 0.1 wt.% to 0.4 wt.%, indicating that Mn2+ ions were gradually converted into Mn3+ ions. EPR spectra of these glasses were characterized by two signals due to Mn2+ and Mn3+ ions. Observations on these signal intensity variations revealed an increase in stability of the glass network with the increase of MnO concentration from 0.1 wt.% to 0.4 wt.%. Parameters, which describe the insulating characteristics, for example, dielectric constant, ε, dielectric loss, tan δ, and AC conductivity σac, were determined in relation to frequency (103 Hz to 105 Hz) and temperature (20°C to 400°C) and presented in the dielectric analysis of these glasses.

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Gamma-rays interactions on optical, FTIR absorption and ESR spectra of 3d transition metals-doped sodium silicophosphate glasses

Cited by 32 publications

References 27 publications

FTIR spectroscopic features ofγ-ray influence on new cement kiln dust based glasses

FTIR spectroscopic features ofγ-ray influence on new cement kiln dust based glasses

Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO 2 : Combination of adsorption and catalysis oxidation

[Retracted] Effect of Manganese Ions on Spectroscopic and Insulating Properties of Aluminophosphate Glasses

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