Preparation of multilayered core-shell TiO2@DR@SiO2 composites and investigation of its photocatalytic performance

Photocatalytic technology has attracted wide attention in the application of sewage treatment. Core-shell spheres can have better properties of photocatalytic performance because of the interaction between the core and shell layers with stable core materials. TiO2@SiO2 core-shell microspheres belong to inorganic core-shell microspheres which have gained more and more attention. In this paper, diazo-resin (DR) was chosento crosslink shell and core, which can be a novel way in the synthesis of monodisperse TiO2@DR@SiO2 core-shell microspheres. Because of core-shell structures with TiO2 surface, the obtained TiO2@DR@SiO2 microspheres can be used as photocatalysts.