Abstract
The controlled synthesis of needle-shaped zinc oxide nanorods to micro-flowers was successfully achieved by a simple solution method using zinc acetate di-hydrate (Zn(CH3COO)(2) center dot 2H(2)O), sodium hydroxide (NaOH) and hydroxylamine hydrochloride (NH2OH center dot HCl) at similar to 90 degrees C temperature with 24 hours refluxing. Two different experiments were carried out with and without hydroxylamine hydrochloride. Zinc acetate di-hydrate and sodium hydroxide give a needle-shaped morphology whereas zinc acetate di-hydrate, sodium hydroxide (NaOH) and hydroxylamine hydrochloride (NH2OH center dot HCl) give a micro-flower like morphology of zinc oxide. We have observed from FESEM (field emission scanning electron microscopy) images that the hexagonal zinc oxide nanorod diameters vary from 250 to 300 nm and their length was exceeds up to 5-6 mu m and the size of microflowers goes to 3-4 mu m. The TEM (transmission electron microscopy) measurements are also consistent with the SEM observations. The powder compositional quality was analyzed by FTIR spectroscopy and the stretching bands of zinc oxide at two different regions 519 cm(-1) and 420 cm(-1) were observed. The UV-vis spectrum at room temperature shows broad bands of zinc oxide at 373 and 375 nm. These data are very close to the standard data from bulk zinc oxide.