Zinc oxide nanoflower prepared by wet colloid chemical method

Flower-like ZnO nanostructure of novel morphologies has been fabricated by a simple wet colloid chemical method. A two-step wet chemical process has been used to prepare ZnO nanoflower on glass substrates using zinc acetate dihydrate [Zn(CH3COO)22H2O] at room temperature. Growth structure of the nanoflowers has been investigated by SEM. UV-Vis absorption spectrum shows an absorption band at 355 nm due to nanosize ZnO. Photoluminescence spectrum exhibits two emission peaks – one at 351 nm corresponding to band gap excitonic emission and another located at 470 nm due to the presence of ionized oxygen vacancies.