Investigation Of Nanomaterials Prepared By Thermal Evaporation Of Carbon-Zno Mixtures

ZnO and other nanomaterials were synthesized by thermal evaporation process by carbon assisted method using powder ZnO as a precursors at temperature 1200 °C in one atmosphere of nitrogen for 3 hours. The diameter of nanofibers and nanowires vary from 50 nm to 200 nm and length of several ten micrometers. The size of nanorods vary from 20 nm to 100 nm and length of a few micrometers. The stereo microscope with an image analyzer and scanning electron microscope instruments are used to characterize these nanostructured materials. © 2008 Trans Tech Publications, Switzerland

Effect Of Synthesis Conditions On The Growth Of Zno Nanorods Via Hydrothermal Method

ZnO nanorods with hexagonal structures were synthesized by a hydrothermal method under different conditions. The effect of synthesis conditions on ZnO nanorod growth was systematically studied by scanning electron microscopy. All samples were characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy and micro-Raman spectroscopy. The results demonstrate that the morphology and ordering of ZnO nanorods are determined by the growth temperature, the overall concentration of the precursors and deposition time. ZnO nanorod morphology and surface-to-volume ratio are most sensitive to temperature. The width of ZnO nanorods can be controlled by the overall concentration of the reactants and by temperature. The influence of the chemical reactions, the nucleation and growth process on the morphology of ZnO nanorods is discussed. © 2008 Elsevier B.V. All rights reserved

Effect of synthesis conditions on the growth of ZnO nanorods via hydrothermal method. Phys

a b s t r a c t ZnO nanorods with hexagonal structures were synthesized by a hydrothermal method under different conditions. The effect of synthesis conditions on ZnO nanorod growth was systematically studied by scanning electron microscopy. All samples were characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy and micro-Raman spectroscopy. The results demonstrate that the morphology and ordering of ZnO nanorods are determined by the growth temperature, the overall concentration of the precursors and deposition time. ZnO nanorod morphology and surface-to-volume ratio are most sensitive to temperature. The width of ZnO nanorods can be controlled by the overall concentration of the reactants and by temperature. The influence of the chemical reactions, the nucleation and growth process on the morphology of ZnO nanorods is discussed