The core-shell particle Fe3O4@TiO2-expanded graphite has successfully been prepared. The adsorption and photo-catalytic capacities of it are investigated. The results show that the Fe3O4particles are coated with anatase titanium dioxide effectively and deposited equally on the surface and gully of the prepared composite material,showing super paramagnetic characteristics. The saturation and magnetization strength of the modified core-shell particle Fe3O4@TiO2-expanded graphite is 28.3 emu/g,the adsorption r...