GREEN SYNTHESIS OF ZnO NANOPARTICLES USING PHOENIX DACTYLIFERA. L LEAF EXTRACT: EFFECT OF ZINC ACETATE CONCENTRATION ON THE TYPE OF PRODUCT.

In this study, green synthesis of ZnO nanoparticles and single crystals were successfully prepared from Phoenix Dactylifera.L leaves extract. Effect of 0.01-0.6M zinc acetate concentration on the nanoparticles and single crystals ZnO formation was studied. UVVis, FT-IR spectrophotometer, X-ray diffraction (XRD), scanning electron microscopy (SEM), and EDAX techniques are used for this purpose. UV-Vis absorption spectra exhibited a maximum absorbance plate at 350nm related to the zinc oxide. Optical band gaps values of the ZnO products were closely equal to the bulk one. FT-IR spectra display a feeble peak at 593 and 674cm-1, which are accredited to ZnO vibration. XRD showed a good crystalline quality of the ZnO product with very well defined highest peaks intensities along (002), (100), (101) indexing the hexagonal structure (wurtzite). Deduced grain sizes of the synthesized ZnO nanoparticles were in the range of 19.77-26.28nm. SEM showed that the green synthesizing nanoparticles contain sometimes micro single ZnO crystals. As a result, use of Phoenix Dactylifera. L leaves extract offers a low cost and kindly environmentally nanoparticles synthesizing process. [ABSTRACT FROM AUTHOR]