Preparation of PS/TiO2 core-shell microspheres and TiO2 hollow shells

PS/TiO2 core-shell microspheres were prepared by a hydro-thermal method at 105°C. Different-sized PS/TiO2 core-shell microspheres were obtained with various PS cores, which were prepared by emulsion polymerization and seeds polymerization. Furthermore, intact hollow TiO2 shells with different shell thickness were obtained by calcining PS/TiO2 core-shell microspheres at 600°C. Light scattering of core-shell microspheres and hollow shells was tested.