| People | Locations | Statistics |
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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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Masse, Sylvie
French National Centre for Scientific Research
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2018Zinc oxide-hydroxyapatite nanocomposite photocatalysts for the degradation of ciprofloxacin and ofloxacin antibioticscitations
- 2018Optical microalgal biosensors for aqueous contaminants using organically doped silica as cellular hostscitations
- 2018Optical microalgal biosensors for aqueous contaminants using organically doped silica as cellular hostscitations
- 2015Porous hydroxyapatite-TiO2 nanocomposites from natural phosphates and their decolorization propertiescitations
- 2015Porous hydroxyapatite-TiO2 nanocomposites from natural phosphates and their decolorization propertiescitations
- 2015Magnetically-recoverable iron oxide-hydroxyapatite nanocomposites for lead removalcitations
- 2011Synthesis and Characterization of Mesoporous Hybrid Silica-Polyacrylamide Aerogels and Xerogelscitations
- 2011Ultrasound-Assisted Synthesis of Mesoporous Zirconia-Hydroxyapatite Nanocomposites and Their Dual Surface Affinity for Cr 3+ /Cr 2 O 7 2– Ionscitations
- 2007High temperature behavior of periodic mesoporous ethanesilica glasses prepared from a bridged silsesquioxane and a non-ionic triblock copolymercitations
- 2006Evolution of C-rich SiOC ceramics. Part I. Characterization by Integral Spectroscopic Techniques : Solid State NMR and Raman spectroscopycitations
- 2002Non-destructive characterization of cementitious materials submitted to thermal treatmentscitations
- 2002Elastic modulus changes in cementitious materials submitted to thermal treatments up to 1000°Ccitations
- 2001Non-destructive characterization of cementitious materials submitted to thermal treatmentscitations
Places of action
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article
Ultrasound-Assisted Synthesis of Mesoporous Zirconia-Hydroxyapatite Nanocomposites and Their Dual Surface Affinity for Cr 3+ /Cr 2 O 7 2– Ions
Abstract
Zirconia-hydroxyapatite nanocomposites were prepared by solgel deposition of zirconium oxide from a zirconium alkoxide in the presence of apatite colloidal suspension under ultrasonication. The material porosity evolves from mainly microporous zirconia to mesoporous hydroxyapatite, with decreasing surface area and increasing pore volume. XRD studies indicate that the apatite phase is well-preserved within the composite materials. The homogeneous dispersion of apatite colloids within the zirconia network was supported by TEM observations and nitrogen sorption measurements. 31P solid-state NMR studies suggest that partial dissolution of apatite may have occurred during the preparation, leading to the adsorption of phosphate species on zirconia particles. This is confirmed by XRD studies of nanocomposites after thermal treatment that demonstrate the preferred formation of tetragonal over monoclinic ZrO2 in the presence of hydroxyapatite. In order to investigate the surface properties of these novel materials, the adsorption of Pb2+, Cr3+, and Cr2O7 2‑ was evaluated. Metal cations were preferentially adsorbed on apatite-rich composites, whereas Cr2O7 2‑ shows a good affinity for the zirconia-rich phases. Zirconiaapatite materials showed the most promising performance in terms of recyclability. These nanocomposites that combine microporosity, mesoporosity and dual sorption properties for these species appear as interesting materials for metal ion remediation and may also find applications as biomaterials.