▎ 摘　　要

NOVELTY - The utility model claims an improved bismuth-oxide graphene composite material photo-catalytic active device, comprising ultrasonic machine, a water inlet pipe, a water faucet, a drain pipe, and further comprises a transparent container and an incandescent light source, a transparent container is placed in the ultrasound machine. water faucet is connected with water tap side of the ultrasonic machine, one end of the water inlet pipe, the other end is put into bottom of the ultrasonic machine, drainpipe installed bottom of the other side of the ultrasonic machine, so as to make the ultrasonic machine is filled with flowing water, when using transparent container immersed in flowing water. an incandescent light source mounted above the ultrasonic machine, ultrasonic machine to generate ultrasonic vibration. The device can be external force is applied by ultrasonic vibration to the catalyst because the catalyst is a ferroelectric material, the periodic under ultrasonic irradiation, the built-in electric field can alternately so as not to continuously separating electron hole pair, so as to improve the photo-catalytic activity.