A new insight into regulating high energy facets of rutile TiO2

A facile and controllable hydrothermal approach is developed to synthesize rutile TiO2 single crystals with regulable (110), (111) and (001) facets without toxic capping agents. The normalized surface photoreactivity of the as-prepared TiO2 with (111) and (001) facets is approximately 5 times that of rutile TiO2 with majority (110) facets.