Facile preparation of anatase/SiO2 spherical nanocomposites and their application in self-cleaning textiles

摘要

Anatase TiO2/SiO2 nanocomposites were prepared by a sol-gel process at a low temperature.The structural properties of these as-prepared nanocomposites were characterized with scanning electron microscopy (SEM) and X-ray diffraction (XRD),showing that TiO2 nanoparticles were deposited on the surface of SiO2 spheres.The spherical TiO2/SiO2 nanocomposites were coated onto cotton fabrics by a simple dip-pad-dry-cure process.The treated cotton fabrics demonstrated higher photocatalytic activity in comparison to pure TiO2 treated cotton fabrics in a typical photocatalytic test using a model compound of Neolan Blue 2G dye.Our results demonstrate that this composite material is a step towards better self-cleaning performance of textile materials.