Microstructure Characterization of Single-crystal ZnO Nanorods Synthesized by Solvothermal at Low Temperature

Single-crystalline ZnO nanorods have been synthesized by a simple solvothermal process at low temperature. Transmission electron microscopy (TEM) observations have confirmed that the as-synthesized products have rod-like morphologies with diameters ranging from several nanometers to 30 nm and lengths from 100 nm to 2 μm. Such hexagonal ZnO nanorods are structurally uniform and the growth direction is identified to be 0001]. Growth mechanism of the ZnO nanorods was proposed.