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Aerosol generated mesoporous silica particles

Niki Baccile 1 David Grosso 2 Clément Sanchez 2
1 SMiLES - Spectroscopie, Modélisation, Interfaces pour L'Environnement et la Santé
LCMCP - Laboratoire de Chimie de la Matière Condensée de Paris
2 MHN - Matériaux Hybrides et Nanomatériaux
LCMCP - Laboratoire de Chimie de la Matière Condensée de Paris
Abstract : Organized mesoporous silica sub-micro spheres have been synthesized by spray drying solutions containing hydrated Si(OEt)4 as silica precursor and surfactants as texturing agent. The resulting powder exhibits controlled organized 2-D hexagonal honey-comb like porosity of 2.2 nm mean pore diameter, homogeneous size dispersion (the particle average diameter is around 0.3 µm and standard deviation σ = 1.89), and a high specific surface area (1000 m2 g−1). The long-range order porosity was achieved after controlling different parameters: surfactant type and surfactant/TEOS ratios, dilution, pH, temperature and relative humidity under laminar flux motion conditions of aerosol generation. Powders were characterized using X-ray diffraction, TEM, N2 isotherm adsorption/desorption cycles and FTIR.
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Niki Baccile, David Grosso, Clément Sanchez. Aerosol generated mesoporous silica particles. Journal of Materials Chemistry, Royal Society of Chemistry, 2003, 13 (12), pp.3011-3016 ⟨10.1039/B307757H⟩. ⟨hal-01455145⟩



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