Nano ZnO (hexagonal wurtzite) of different shapes under various conditions: Fabrication and characterization

Abstract

One-dimensional nanorods, two-dimensional nanoflakes or nanoplates ZnO had been effectively prepared by a promising hydrothermal process. The growth of the synthesized ZnO morphology has readily affected by the four synthesis key parameters of Zn concentration, pH, temperature, and growth time together as a compatible study. All the series of the synthesized specimens were analyzed using diverse characterization techniques including, Fourier transform infrared spectroscopy (FTIR), x-ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The results discussed the action of all synthetic parameters in a good quality of the formed wurtzite phase by enhancing the ZnO growth and its order. Likewise, the aspect ratio data showed that the well-crystalline hexagonal nanorods were successfully obtained under the following synthesis conditions: precursor Zn concentration less than 0.4 M, pH = 7-9, 250 °C and 2.5 h of the growth time.