Influence of gamma ray on optical and structural properties of commercial glass enriched with copper oxide

Sallam, O.I.; Alhodaib, Aiyeshah; Aal, S. Abd El; Ezz-Eldin, F.M.

doi:10.1016/j.inoche.2020.108388

Cited by 23 publications

(7 citation statements)

References 34 publications

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“…The E U values estimated were 0.308 (±0.002), 0.313 (±0.001), and 0.330 (±0.002) eV for the ISG, ISG‐1, and ISG‐2 samples, respectively. In general, an increase in the Urbach energy reflects an increased degree of disorder and defects and vice versa 42,45–47 . In this sense, the original ISG is suggested by the lowest E U value to possess less disorder and/or defects, followed by ISG‐1.…”

Section: Resultsmentioning

confidence: 99%

Physico‐chemical properties of international simple glass (ISG) nuclear waste simulants: Luminescence baseline study

2022

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Borosilicate glass has been adopted internationally for the treatment of nuclear waste with the object of long‐term stabilization through vitrification. Aiming to facilitate experimental comparisons across laboratories, the six‐component international simple glass (ISG) was developed as benchmark. The original ISG produced by Mo‐SCI Corporation (Rolla, MO) was distributed and characterized for different physical properties thus serving as reference for further studies. Still, photoluminescence (PL) properties, which may be useful for scrutinizing radiation‐induced damage, have not been reported. Further, the original ISG contained significant iron impurities, which may present interference in various studies (e.g., optical). Consequently, two new ISG analogs lacking iron impurities (labeled ISG‐1 [closest composition to original ISG] and ISG‐2 [some MgO added at expense of CaO]) were synthesized by Corning Inc. (Corning, NY) (also doped with lanthanum for subsequent corrosion tests involving atom probe tomography), which remain to be fully characterized. Accordingly, this work was undertaken to perform a comprehensive study comparing the three ISG specimens. Various characterizations were then performed on the pristine glasses: X‐ray diffraction and vibrational spectroscopy (structural properties); static‐leach product consistency test (PCT, dissolution behavior); dilatometry and calorimetry measurements (thermal properties); and optical absorption with Tauc and Urbach plots analysis, followed by PL spectroscopy with decay kinetics assessment (optical properties). While the general structural features appeared similar among the glasses, the deconvolution of Raman spectra suggested a lower degree of connectivity in the silica network for ISG‐2. In addition, some differences were indicated from the PCT results and thermal properties assessed, which were discussed based on compositional variations. Further on, the optical properties were shown to be the most distinct. The optical absorption of the original ISG was characterized by Fe2+/Fe3+ impurities not detected for ISG‐1 and ISG‐2. The glasses all exhibited two main PL features (∼1.8 and 2.5 eV) with multiexponential decay behavior apparently of intrinsic origin. In addition, ISG‐1 and ISG‐2 showed a third high‐energy (∼3.4 eV) fast‐decaying contribution tentatively credited to tin impurities, which appeared most significantly for ISG‐1. The results are expected to serve as baseline for future studies simulating the effects of radioactive element decay.

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Section: Resultsmentioning

confidence: 99%

Physico‐chemical properties of international simple glass (ISG) nuclear waste simulants: Luminescence baseline study

2022

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“…After deconvolution of the spectrum, five peaks at 197, 245, 285, 322, and 365 nm could be identified for the undoped glass, which is expected to be related to two types of defects. The first is for silicon-electron-center defects (Si-ECs), and the other is for silicon-oxygen-hole-center defects (SiOHCs) at 245 and 285 nm [ 18 , 19 ]. Another absorption peak at 365 nm is associated with Fe 3+ ions [ 17 ], while peaks at 197 nm are attributed to the absence of one or more electrons from Non Bridging Oxygen’s (NBOs) to give Non Bridging Oxygen’s Hole Centers (NBO-HCs) in addition to the creation of HCs of Al inside the glass system from rice ash [ 18 , 20 ].…”

Section: Resultsmentioning

confidence: 99%

“…The first is for silicon-electron-center defects (Si-ECs), and the other is for silicon-oxygen-hole-center defects (SiOHCs) at 245 and 285 nm [ 18 , 19 ]. Another absorption peak at 365 nm is associated with Fe 3+ ions [ 17 ], while peaks at 197 nm are attributed to the absence of one or more electrons from Non Bridging Oxygen’s (NBOs) to give Non Bridging Oxygen’s Hole Centers (NBO-HCs) in addition to the creation of HCs of Al inside the glass system from rice ash [ 18 , 20 ]. Peaks near 322 nm can appear due to the presence of borate groups.…”

Section: Resultsmentioning

confidence: 99%

Effect of Rare-Earth Ions on the Optical and PL Properties of Novel Borosilicate Glass Developed from Agricultural Waste

et al. 2021

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There is considerable attention devoted to the use of agricultural waste as a raw material substitute for commercial silica in the development of borosilicate glasses doped with rare earth oxides. Here, we present a novel structure for borosilicate glasses made from rice husk ash with a 25% molar ratio of extracted SiO2 and doped with neodymium (GRN) or dysprosium (GRD). Adding rare earth oxides to borosilicate glasses by the melt quenching method enhanced optical transmission due to the presence of their tetrahedral geometries. GRN samples showed few bands near zero, which constitutes good utility for band rejection filters in image devices, and the samples exhibited energy values ranging from 3.03 to 3.00 eV before and after gamma irradiation. Optical transmissions of GRD samples showed peaks at 25,974, 22,172, 13,333, 11,273, 9302, 7987, and 6042 cm−1. Deterioration in transmittance was observed when the investigated samples were exposed to irradiation doses of 20 and 50 kGy in the wavenumber range of 12,500 to 50,000 cm−1; however, different behaviors after irradiation with 50 kGy caused an increase in transparency in comparison to 20 kGy irradiation, which was pronounced for higher wavenumbers (greater than 12,500 cm−1). Photoluminescence emission and excitation spectra of the glass-doped Nd3+ (GRN) and glass-doped Dy3+ (GRD) samples were determined. GRD exhibited emission in the blue and yellow regions of the visible spectrum, which gave a white flash of light. Chromaticity coordinate (CIE) measurements of GRD samples indicated the origin of its luminous color relative to the standard white light region.

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“…The main absorbed peaks were related to silica and phosphrous. Before immersion in SBF, peaks related to silica were located at [24,25]:…”

Section: Ftir Analysismentioning

confidence: 99%

Preparation of Bioglasses Developed from Bypass Cement Dust for Bone Regeneration and Comparing their Radiation Damage Prediction with Natural Bone

Alhodaib¹,

All²,

Sallam³

et al. 2022

Preprint

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Selected glasses with 10 Na2O + (90-x) P2O5 + x BCD where bypass cement dust (BCD) x value =10, 20, 30 in mol% were synthesized by recognizable melting annealing technique. Cooperative characterization of the prepared glasses were carried out through FTIR and SEM analysis before and after immersed in simulated body fluid (SBF) solution for 13 and 23 days at 37 oC. After immersion in SBF, apatite layer is produced on the glass surface after 13 day and increase after 23 day, showing good bioactivity after immersion in the SBF especially for bioglass sample with 30% BCD. A porous hydroxy apatite layer produced on the surface of SBF-glass composite and this layer became denser after more soaking time, periods were extended from 13 to 23 days. Atomic absorption spectroscopy explained the early period of soaking that cause release of both Si and Ca ions through the glass beside decreasing of phosphrous ions. Bioglass (BCD-30) is studied as shielding for gamma, protons and alphas by using Phy-X software, SRIM Monte Carlo simulation code and its subroutine TRIM. The gamma shielding parameters, mass stopping power (MSP), range for both proton (H- ions) and alpha (He- ions) in bioglass- BCD-30 and human bone tissue have estimated. Also, comparison between them is calculated in predicting the radiation damage and atomic displacements per atom (dpa).

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Influence of gamma ray on optical and structural properties of commercial glass enriched with copper oxide

Cited by 23 publications

References 34 publications

Physico‐chemical properties of international simple glass (ISG) nuclear waste simulants: Luminescence baseline study

Physico‐chemical properties of international simple glass (ISG) nuclear waste simulants: Luminescence baseline study

Effect of Rare-Earth Ions on the Optical and PL Properties of Novel Borosilicate Glass Developed from Agricultural Waste

Preparation of Bioglasses Developed from Bypass Cement Dust for Bone Regeneration and Comparing their Radiation Damage Prediction with Natural Bone

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