The orderly nano array of truncated octahedra Cu2O nanocrystals with the enhancement of visible light photocatalytic activity

The orderly nano array is able to improve the light utilization efficiency and has been thought to be a promising way for advancing photocatalysis. The orderly nano array of truncated octahedra Cu 2 O nanocrystals have been successfully fabricated by the facile solution-based one-step reduction and self-assembly method. The results of XRD, SEM and TEM indicate that the Cu 2 O nano array is successfully assembled on the Si substrate. The photocatalytic activity of the Cu 2 O orderly nano array is investigated under visible light irradiation, and it is demonstrated to be significantly enhanced after the Cu 2 O is self-assembled orderly. Furthermore, the surface orderly structure of the nano array is considered as the main reason for the enhancement.