Effect of precursor’s concentration on structure and morphology of ZnO nanorods synthesized through hydrothermal method on gold surface

Abstract

In this research ZnO nanorods with having clear hexagonal shapes from a lower precursor concentration (1 mM-9 mM) are produced. ZnO nanorods with different shape and sizes have been prepared on chromium/gold (Cr/Au) glass substrate through hydrothermal method. The effect of concentrations of equimolar solution on the synthesis of ZnO nanorods is investigated. The ZnO nanorods growth have been characterized by using field emission scanning electron microscope (FESEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) to investigate the surface morphology, the elemental and the structure analysis, respectively. It is observed that the precursor concentration has a significant influence on the morphology and crystal structure, crystal size, and FWHM of ZnO nanorods. ZnO nanorods were grown in high density with an orientation along c-axis /of the substrate. It also exhibits hexagonal structure with a dominant (002) peak in XRD spectrum and possesses a high crystal quality. The effect of ...