Abstract
Organic functional groups were immobilized to SiO2 surface by the co-condensation of tetraethoxysilane and the hydrophobic organoalkoxysilanes RSi(OR`)3 (R = C12H25) in the presence of a cationic surfactant CTAB as the structure directing agents and sodium hydroxide as catalyst in the pure water system. These alkyl-functionalized mesoporous nanoparticles were characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and nitrogen adsorption–desorption et al. The results indicate that the spherical functionalized mesostructures silica particles are ordered 2D hexagonal mesophases with large specific surface area (>1,000 m2/g), larger pore volume (>1.2 cm3/g), narrow pore sizes distribution (about 2.7 nm) and uniform small size (about 110 nm). Furthermore, Texture analysis reveals the pore structure change to typical MCM-41 (2D hexagonal p6 mm) with increasing the amount of DTES and the chain length of the organic group. Furthermore, after being coated by the prepared sol (0.05 g/25 ml ethanol) containing dodecyl-functionalized mesoporous silica particles, the coated glass substrate showed good antifogging and superhydrophilic property.
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Li, X., Shi, B., Li, M. et al. Synthesis of highly ordered alkyl-functionalized mesoporous silica by co-condensation method and applications in surface coating with superhydrophilic/antifogging properties. J Porous Mater 22, 201–210 (2015). https://doi.org/10.1007/s10934-014-9886-4
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DOI: https://doi.org/10.1007/s10934-014-9886-4