Abstract: Nano-sized TiO2 has been widely used in many field , such as air purification , sewage treatment ,self-cleaning due to its excellent photocatalytic properties .The latest research progress in nano-titanium dioxide used in ceramics , glass, cement, concrete and other materials in the silicate series were reviewed.And the application of TiO2 composites in the field of environmental protection , such as antibiosis , self-cleaning , and degradation of nitrogen oxides and so on were reviewed .

Key words: nano-sized TiO2;photocatalysis;ceramic;glass;cement;concrete