Abstract
After ball-milling the commercial K2Ti4O9 at 700 rpm for 2 h, the obtained fine powders were dispersed in a 5 M HCl solution to destruct the layered sheet, and then the solution pH was adjusted to 0 with NH3 aqueous solution. A microwave-assisted hydrothermal treatment was employed to prepare TiO2 from the precursor solution. It is found that by controlling the reaction conditions, TiO2 with different crystalling phases could be synthesized, and most of the prepared samples showed high specific surface areas. The prepared TiO2 showed excellent activity in photo-destruction of NO gas.
