Structural, optical and dosimetric characterization of CaSO4:Tb, CaSO4:Tb, Ag and CaSO4:Tb,Ag(NP)

Silva, Anderson M.B.; Junot, Danilo O.; Caldas, Linda V.E.; Souza, Divanízia do Nascimento

doi:10.1016/j.jlumin.2020.117286

Cited by 31 publications

(6 citation statements)

References 37 publications

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“…Currently, there is only limited investigation about the use of terbium in biomaterials research. There is no information about the doping of gypsum bone cements, while many studies are devoted to the doping of CS phosphors with terbium [37][38][39]. The largest number of research articles deal with the impact of terbium on calcium phosphate [21,40], combined bioglasses [41,42], organic hydrogels [43], and some other related topics.…”

Section: Discussionmentioning

confidence: 99%

Effects of Tb<sup>3+</sup> on Properties of Luminescent Calcium Sulfate Cement

Khayrutdinova,

Goldberg,

Fomin

et al. 2023

Preprint

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Calcium sulfate (CS) materials containing terbium ions at 0, 1.0, or 2.0 mol.% were obtained by mechanochemical synthesis. According to X-ray diffraction data, the powder materials are characterized by the presence of a CaSO4×0.5H2O phase, while Tb3+ is incorporated into the lattice at ≤1.0 mol.%. Specific surface area enlarged from 2.1 to 22.5 m2/g as crystallite size decreased from 68 to 31 nm and the Tb3+ concentration increased up to 1.0 mol.%. Thermal analysis showed that terbium slightly raises the temperature of CaSO4×2H2O-to-CaSO4 transition. The presence of Tb3+ did not affect the solubility of the CS cements. Furthermore, after 7 days of soaking of the materials in a simulated body fluid, a calcium phosphate layer formed corresponding to a hydroxyapatite phase, in contrast to the pure cements. Luminescent properties were studied by excitation at 276 nm. The recorded emission peaks of the CS materials indicated that the luminescence of the samples is green and blue, with the most intense luminescence observed for samples containing 1.0 mol.% Tb3+. The developed materials can find applications in medicine as bioimplants for the regeneration and restoration of bone tissue with a possibility of noninvasive monitoring of the bone restoration process.

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Section: Discussionmentioning

confidence: 99%

Effects of Tb<sup>3+</sup> on Properties of Luminescent Calcium Sulfate Cement

Khayrutdinova,

Goldberg,

Fomin

et al. 2023

Preprint

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“…In the absence of precipitation inhibitor, the diffraction peaks are mainly distributed at 14.7°, 25.6° and 29.7°, which are the diffraction peaks of calcium sulfate crystals lattice planes of (100), ( 110) and (200), respectively. After adding polymer inhibitor, the main diffraction peaks appear at 11.6 °, 20.7°, 23.4°, 29.1° and 31.1°, corresponding to lattice faces of (020), ( 021), (040) (041) and (−221) of gypsum (syn) [40,41]. What is mentioned above indicates that the polymer has altered the crystal type of calcium sulfate precipitation.…”

Section: Characterization and Analysis Of Calcium Sulfate Precipitatementioning

confidence: 91%

Inhibition of Poly(ethylenediaminetetraacetic acid-diethanolamine) on Deposition of Calcium Sulfate Crystal in Simulated Industrial Water

et al. 2020

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Calcium sulfate scale is a typical deposit on the equipment pieces or pipes of an industrial water system. Scale inhibitors could obviously reduce the precipitation of calcium sulfate crystal. The development and research of late-model environmentally friendly polymer inhibitors are often urgent problems to be addressed. A water-soluble poly(ethylenediaminetetraacetic acid-diethanolamine) (PEDTA-DEA) was successfully synthesized by thermal polycondensation of ethylenediaminetetraacetic acid (EDTA) with diethanolamine (DEA). The polymer product was characterized by Fourier infrared spectrum (FTIR) and the molecular weight was measured by gel chromatography, which confirms the polymerization of the two monomers. The inhibition effect of the polymer against calcium sulfate deposition was studied by static scale inhibition tests. When the Ca2+ concentration is 3000 mg/L, and the dosage of the polymer inhibitor is 10 mg/L, the inhibition effect exceeds 90%. The results show that PEDTA-DEA can inhibit the precipitation of calcium sulfate and reduce the deposition of calcium sulfate scale. The precipitate of calcium sulfate collected from the static scale inhibition test solution was analyzed by FTIR, scanning electron microscope (SEM) and X-ray diffraction (XRD). The results revealed that the addition of the polymer significantly changes the calcium sulfate crystal’s growth shape. Therefore, PEDTA-DEA is a potential calcium sulfate precipitation inhibitor for the industrial water system.

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“… 91 Another attempt was made to improve the OSL dosimetric properties of microstructured CaSO 4 doped with Terbium (Tb) by co-doping with AgNP and comparing it to that co-doped with micro Ag. 92 In that work, the dosimetric features were enhanced by lowering the fading and increasing the sensitivity, leading to a decrease in the detection limit.…”

Section: Enhancement Of Various Radiation Dosimetry Systems Using Nan...mentioning

confidence: 91%

Review of nanomaterial advances for ionizing radiation dosimetry

Aboelezz

Pogue

2023

Applied Physics Reviews

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There are a wide range of applications with ionizing radiation and a common theme throughout these is that accurate dosimetry is usually required, although many newer demands are provided by improved features in higher range, multi-spectral and particle type detected. Today, the array of dosimeters includes both offline and online tools, such as gel dosimeters, thermoluminescence (TL), scintillators, optically stimulated luminescence (OSL), radiochromic polymeric films, gels, ionization chambers, colorimetry, and electron spin resonance (ESR) measurement systems. Several future nanocomposite features and interpretation of their substantial behaviors are discussed that can lead to improvements in specific features, such as (1) lower sensitivity range, (2) less saturation at high range, (3) overall increased dynamic range, (4) superior linearity, (5) linear energy transfer and energy independence, (6) lower cost, (7) higher ease of use, and (8) improved tissue equivalence. Nanophase versions of TL and ESR dosimeters and scintillators each have potential for higher range of linearity, sometimes due to superior charge transfer to the trapping center. Both OSL and ESR detection of nanomaterials can have increased dose sensitivity because of their higher readout sensitivity with nanoscale sensing. New nanocrystalline scintillators, such as perovskite, have fundamentally important advantages in sensitivity and purposeful design for key new applications. Nanoparticle plasmon coupled sensors doped within a lower Zeff material have been an effective way to achieve enhanced sensitivity of many dosimetry systems while still achieving tissue equivalency. These nanomaterial processing techniques and unique combinations of them are key steps that lead to the advanced features. Each must be realized through industrial production and quality control with packaging into dosimetry systems that maximize stability and reproducibility. Ultimately, recommendations for future work in this field of radiation dosimetry were summarized throughout the review.

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Structural, optical and dosimetric characterization of CaSO4:Tb, CaSO4:Tb, Ag and CaSO4:Tb,Ag(NP)

Cited by 31 publications

References 37 publications

Effects of Tb<sup>3+</sup> on Properties of Luminescent Calcium Sulfate Cement

Effects of Tb<sup>3+</sup> on Properties of Luminescent Calcium Sulfate Cement

Inhibition of Poly(ethylenediaminetetraacetic acid-diethanolamine) on Deposition of Calcium Sulfate Crystal in Simulated Industrial Water

Review of nanomaterial advances for ionizing radiation dosimetry

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