Site-Specific Deposition of Titanium Oxide on Zinc Oxide Nanorods

ZnO/TiO 2 nanohybrid structures have been synthesized by the simple method of the site-specific deposition of titanium oxide on ZnO nanorods. The polarity of the ZnO (0001) surface plays an important role in the formation of the nanohybrid structures. Using high-resolution transmission electron microscopy, we observed that the amorphous TiO 2 particles that are connected to ZnO nanorods are transformed to nanocrystals of the anatase and rutile phases, which have a particular relationship with the orientation of ZnO nanorods and good interface structures. This work provides a rational approach to the assembly of complex nanohybrids using the intrinsic properties of ZnO nanocrystals. In addition, the size, aspect ratio, and TiO 2 structures can be fully controlled in the fabrication process and subsequent annealing treatments.