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Issue 12, 2003
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Aerosol generated mesoporous silica particles

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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.

Graphical abstract: Aerosol generated mesoporous silica particles

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Publication details

The article was received on 08 Jul 2003, accepted on 11 Sep 2003 and first published on 29 Oct 2003

Article type: Paper
DOI: 10.1039/B307757H
Citation: J. Mater. Chem., 2003,13, 3011-3016
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    Aerosol generated mesoporous silica particles

    N. Baccile, D. Grosso and C. Sanchez, J. Mater. Chem., 2003, 13, 3011
    DOI: 10.1039/B307757H

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