Controlling the Morphology of ZnO Nanostructures During Growth Process

In the present work, Zinc Oxide (ZnO) nanorods and nanotubes were fabricated in single synthesis step by hydrothermal method over ITO/glass. We have studied the growth mechanism behind the formation of ZnO nanotubes from nanorods. Finally, a control over the morphology of ZnO nanostructures during the growth process has been achieved. The as-synthesized nanorods and nanotubes were structurally characterized by field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). Structural characterization confirms the formation of dense arrays of ZnO nanorods and nanotubes with a hexagonal crystal structure.