Surface modification of titania nanoparticles by an evaporation-condensation process in a flow chamber
نویسندگان
چکیده
Introduction Titania (TiO2) is an outstanding materials because of its superior physical properties but nanostructured titania films synthesized by an evaporationcondensation aerosol process can be used only for limited applications because of their low mechanical strength. In this study, the surface of titania nanoparticles (TiO2) is modified by a heterogeneous capillary condensation process to enhance the mechanical strength of the nanoparticle film. Tetraethyl orthosilicate (TEOS) is used as precursor to form a bridge-shaped silica (SiO2) layer between titania particles. The presence of a silica layer on nanoparticle surface is confirmed by Transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS).
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