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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Leeuw, Nora H. De
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024High performance thermoelectrics from low-cost and abundant CuS/CuI compositescitations
- 2024Fabrication of ZnO Scaffolded CdS Nanostructured Photoanodes with Enhanced Photoelectrochemical Water Splitting Activity under Visible Lightcitations
- 2021Heterostructure-based devices with enhanced humidity stability for H2 gas sensing applications in breath tests and portable batteriescitations
- 2020Exploring the formation of intrinsic p-type and n-type defects in CuOcitations
- 2020Single CuO/Cu2O/Cu Microwire Covered by a Nanowire Network as a Gas Sensor for the Detection of Battery Hazardscitations
- 2019Tuning the electronic band gap of Cu2O via transition metal doping for improved photovoltaic applicationscitations
- 2017Enhanced UV and ethanol vapour sensing of a single 3-D ZnO tetrapod alloyed with Fe2O3 nanoparticlescitations
- 2017Multifunctional Materialscitations
- 2016Synthesis, characterization and DFT studies of zinc-doped copper oxide nanocrystals for gas sensing applicationscitations
- 2016A DFT+U study of the structural, electronic, magnetic, and mechanical properties of cubic and orthorhombic SmCoO3citations
- 2015Novel sol–gel preparation of (P2O5)0.4–(CaO)0.25–(Na2O)X–(TiO2)(0.35−X) bioresorbable glasses (X = 0.05, 0.1, and 0.15)citations
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article
Novel sol–gel preparation of (P2O5)0.4–(CaO)0.25–(Na2O)X–(TiO2)(0.35−X) bioresorbable glasses (X = 0.05, 0.1, and 0.15)
Abstract
<p>Quaternary phosphate-based glasses in the P<sub>2</sub>O<sub>5</sub>–CaO–Na<sub>2</sub>O–TiO<sub>2</sub> system with a fixed P<sub>2</sub>O<sub>5</sub> and CaO content of 40 and 25 mol% respectively have been successfully synthesised via sol–gel method and bulk, transparent samples were obtained. The structure, elemental proportion, and thermal properties of stabilised sol–gel glasses have been characterised using X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), <sup>31</sup>P nuclear magnetic resonance (<sup>31</sup>P NMR), titanium K-edge X-ray absorption near-edge structure (XANES), fourier transform infrared (FTIR) spectroscopy, and differential thermal analysis (DTA). The XRD results confirmed the amorphous nature for all stabilized sol–gel derived glasses. The EDX result shows the relatively low loss of phosphorus during the sol–gel process and Ti K-edge XANES confirmed titanium in the glass structure is in mainly six-fold coordination environment. The <sup>31</sup>P NMR and FTIR results revealed that the glass structure consist of mainly Q<sup>1</sup> and Q<sup>2</sup> phosphate units and the Ti<sup>4+</sup> cation was acting as a cross-linking between phosphate units. In addition DTA results confirmed a decrease in the glass transition and crystallisation temperature with increasing Na<sub>2</sub>O content. Ion release studies also demonstrated a decrease in degradation rates with increasing TiO<sub>2</sub> content therefore supporting the use of these glasses for biomedical applications that require a degree of control over glass degradation. These sol–gel glasses also offer the potential to incorporate proactive molecules for drug delivery application due to the low synthesis temperature employed.</p>