Anti-fogging and anti-reflective silica nanofibrous film fabricated by seedless flame method

摘要

Here we report a multifunctional SiO_2 nanofibrous film fabricated on plain glass by the seedless flame spray pyrolysis method. The SiO_2 nanowires show different morphologies as growth time increase due to the alteration of gas precursor diffusion conditions. The growth route of nanowires has been divided into several stages due to the different dominant growth type. The densification and overlapping caused by radial and axial growth in competitive relation endow the as-made SiO_2 films with increased surface area and sub-wavelength scale structure. Combining the hydrophilicity of flame-made SiO_2 and the special fibrous structure, the nanofibrous SiO_2 film exhibits considerable anti-fogging and anti-reflective properties.