METAL OXIDE PARTICLES

摘要

Disclosed herein are methods for producing metal oxide (e.g. TiO2) particles comprising an inner metal oxide species within an outer metal oxide shell. The methods comprise heating an aqueous mixture comprising a metal oxide precursor (e.g. a titanium compound) and a carbonaceous substance capable of forming a carbonaceous template to a temperature at which the metal oxide precursor, water and carbonaceous substance react to produce composite particles comprising a carbonaceous template layer interposed between an inner metal oxide species and outer metal oxide shell. Also disclosed are TiO2 particles comprising an inner TiO2 species within an outer TiO2 shell.