Study on TiO_2/Tourmaline Composite Photocatalyst Materials

摘要

TiO_2/tourmaline composite photocatalyst materials were fabricated mainly by the sol-gel technique. Study found that, TiO_2/tourmaline composite photocatalyst materials, under the bombardment by electron beam in SEM, would turn to be brighter and attract each other, and the electrostatic gravitation among the TiO_2/tourmaline composite photocatalyst materials granules grow up evidently on their surfaces with the accumulations of electron from the electron probe, so as to be strong enough to force the TiO_2/tourmaline composite photocatalyst materials granules to be shifted rapidly and accumulated into clusters ultimately, and the granules which were heat treatment on 600°C for 3 h shifted most strongly. And the average absorption rate of TiO_2/tourmaline composite photocatalyst material was stronger than nano-TiO_2, in the visible region of wavelength 400-500 nm. In addition, TiO_2/tourmaline composite photocatalyst materials were capable of activating water molecules to reduce agglomeration of water molecules, and to increase the amount of dissolved oxygen in the Photocatalytic reaction system.