method for preparing porous metal oxide microspheres, porous microspheres, aggregate sample of porous microspheres, and, composition.

摘要

porous metal oxide microspheres are prepared via a process comprising forming a liquid dispersion of polymer nanoparticles and a metal oxide; forming liquid droplets of the dispersion; drying the droplets to provide polymer model microspheres comprising polymer nanospheres; and removing the polymer nanospheres from the template microspheres to provide the porous metal oxide microspheres. porous microspheres exhibit saturated colors and are suitable as colorants for a variety of end uses.