Controlling the morphology of ZnO nanostructures during growth process

Abstract

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.