Preparing nitrogen-doped titanium dioxide comprises hydrolysis of precursor of titanium dioxide with aqueous ammonia solution, recovering the product, cleaning the product with another aqueous ammonia solution, drying and calcining

摘要

Preparing nitrogen-doped titanium dioxide (N-TiO 2) comprises: hydrolysis of a precursor of titanium dioxide with a first aqueous ammonia solution until it reaches substantially neutral pH; recovering the solid hydrolysis product; cleaning the product with a seconds aqueous ammonia solution; and drying and calcining the product.