Abstract: TiO2 nanomaterial is one of the most used nanomaterials in the world, which has big specific surface area and outstanding performance in photocatalysis. Recently the application of nano-sized dioxide titanium in the field of biomedicine has raised much attention because of the advanced development of nanomaterial technology. This review summarizes the applications of nano-sized dioxide titanium in tumor therapy, surface modification on implant and antibacterial aspects.

Key words: nano-sized dioxide titanium, photocatalysis, tumor therapy, surface modification on implant, antibacterial effect