Effect of particle size on the thermoluminescence (TL) response of silica nanoparticles

Shafiqah, A.S. Siti; Amin, Yusoff Mohd; Nor, Roslan Md; Bradley, D.A.

doi:10.1016/j.radphyschem.2015.08.004

Cited by 13 publications

(4 citation statements)

References 21 publications

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“…Based on the TL intensity, it also shows that smaller particles give high TL yield than a larger particle. The present result also supports that the particles's size affects the TL yield but taking ethanol (solubality agent) to be varied in the silica synthesis [15].…”

Section: Discussionsupporting

confidence: 81%

Thermoluminescence (TL) response of silica nanoparticles subjected to 50 Gy gamma irradiation.

Ghani

Saeed

Hashim³

2017

Mal. J. Fund. Appl. Sci.

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Thermoluminescence (TL) response of silica nanoparticles synthesized by the sol-gel method is presented here. Transmission electron microscopy (TEM) was used to find out the size and morphology of the pure silica nanoparticles. By using an appropriate amount of tetraethylorthosilicate, ethanol, deionized water and ammonia solution, silica samples were synthesized. To determine the best TL response of silica, samples were irradiated with 50Gy gamma rays. The effect of size dependency towards TL yield indicates that decreasing the particles’ size of silica, increases the TL yield.

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Section: Discussionsupporting

confidence: 81%

Thermoluminescence (TL) response of silica nanoparticles subjected to 50 Gy gamma irradiation.

Ghani

Saeed

Hashim³

2017

Mal. J. Fund. Appl. Sci.

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“…Previous reports on TL originating from electrons trapped in γ-ray-induced defects are contradictory. According to refs and, TL is only observed below room temperature, while in refs and , the TL glow curves exhibit maxima at 170 and 220 °C, respectively. Bi 12 SiO 20 single crystals contain several trapping centers with small activation energies (see Table S5), and all peaks in the glow curves therefore appear below room temperature.…”

Section: Results and Discussionmentioning

confidence: 87%

Bismuth Oxide Nanoparticles Partially Substituted with Eu^III, Mn^IV, and Si^IV: Structural, Spectroscopic, and Optical Findings

Ortiz-Quiñonez¹,

Zumeta-Dubé²,

Díaz³

et al. 2017

Inorg. Chem.

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Interest in nanostructured partially substituted bismuth oxides has been increasing over the last years. Research on new synthesis methods, properties, and possible uses for these oxides is needed. The objective of this paper is to synthesize β-BiO, β-BiO:Eu, β-BiO:Mn, BiBiO, BiBiO/Li, BiMnO, and BiSiO nanoparticles and to investigate their structural, spectroscopic, and optical changes. Some of the causes that generated their properties are also discussed. These materials are important because the doping or partial substitution of bismuth oxide with these cations (Eu, Mn, and Si) modifies some properties such as optical absorption, reactivity toward CO, among others. X-ray diffraction (in powders), high-resolution transmission electron microscopy, Fourier transform infrared (FTIR), resonance Raman scattering, diffuse reflectance, and solid-state magic-angle-spinning Si NMR were used for the characterization of the synthesized materials. We found that partial substitution of yellow BiBiO with Mn and Si changed the color to green and whitish, respectively. New bands in the Raman scattering and FTIR spectra of these oxides are deeply discussed. Raman scattering spectroscopy was a valuable and reliable technique to detect the Eu and Mn cations as dopants in the bismuth oxides. The Si chemical shift (δ) in BiSiO was -78.16 ppm, whereas in SiO, it was around -110 ppm. This considerable shift in BiSiO occurred because of an increased shielding of the Si nucleus in the Si(O) tetrahedron. This shielding was provided by the low-electronegativity and highly polarizable Bi cations. The isovalent doping of β-BiO nanoparticles with Eu enhanced their thermal stability over 400 °C. Variation in the optical absorption and reactivity toward the acidic CO molecule of the partially substituted bismuth oxides was explained on the basis of the optical basicity and ionic-covalent parameter concepts. Some possible uses for the synthesized oxides are suggested.

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“…[ 88–90 ] FOM was also obtained as less than 3.0% for the deconvoluted glow curves, which meant that the fits were good. [ 21,91,92 ] Figures 18 and 19 show the deconvolution graphs of two optimal samples.…”

Section: Resultsmentioning

confidence: 99%

Thermoluminescence dose–response of synthesized and doped hydroxyapatite: effect of formed crystal phases

Taghipour

Zolfagharpour

Daneshvar³

et al. 2022

Luminescence

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In this research work, pure and doped hydroxyapatite samples were synthesized using hydrolysis and hydrothermal methods to produce powder material. The crystal structure was carried out by producing data using the X-ray diffraction system and the Rietveld method using material analysis using diffraction software. Then the sample was irradiated with different radiation absorbed doses, and their thermoluminescence response was investigated from the dosimetry point of view. The results showed that the synthesis method, doping, and annealing temperature could significantly affect the crystal structure and thermoluminescence dosimetry response of hydroxyapatite samples, consequently. The results showed that the high-temperature annealing process and dopant could lead to the formation of the β-TCP crystal phase during or after the synthesis of hydroxyapatite, and the percentage of this formed phase increased when raising the temperature, and finally led to increase in the thermoluminescence response.

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Effect of particle size on the thermoluminescence (TL) response of silica nanoparticles

Cited by 13 publications

References 21 publications

Thermoluminescence (TL) response of silica nanoparticles subjected to 50 Gy gamma irradiation.

Thermoluminescence (TL) response of silica nanoparticles subjected to 50 Gy gamma irradiation.

Bismuth Oxide Nanoparticles Partially Substituted with Eu^III, Mn^IV, and Si^IV: Structural, Spectroscopic, and Optical Findings

Thermoluminescence dose–response of synthesized and doped hydroxyapatite: effect of formed crystal phases

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Effect of particle size on the thermoluminescence (TL) response of silica nanoparticles

Cited by 13 publications

References 21 publications

Thermoluminescence (TL) response of silica nanoparticles subjected to 50 Gy gamma irradiation.

Thermoluminescence (TL) response of silica nanoparticles subjected to 50 Gy gamma irradiation.

Bismuth Oxide Nanoparticles Partially Substituted with EuIII, MnIV, and SiIV: Structural, Spectroscopic, and Optical Findings

Thermoluminescence dose–response of synthesized and doped hydroxyapatite: effect of formed crystal phases

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Bismuth Oxide Nanoparticles Partially Substituted with Eu^III, Mn^IV, and Si^IV: Structural, Spectroscopic, and Optical Findings