Abstract
Zinc oxide nanopowders were synthesized by the sol–gel method from an ethanolsolution of zinc acetate dihydrate. Detailed structural and microstructuralinvestigations were carried out using x-ray diffraction, Raman spectroscopy,thermogravimetric and differential thermal analyses, as well as high-resolutiontransmission electron microscopy (TEM) and field-emission scanning electron microscopy.The intermediate compound of the reaction was layered zinc hydroxide acetatethat further transforms into hexagonally shaped ZnO crystalline nanoplates (dm = 4 nm), which aggregate into larger spherical particles. According to the TEM analysis theZnO nanoparticles were self-assembled into larger particles with the same orientation,i.e. aligned lattice planes of the particles. A further solvothermal treatment resulted inhexagonal, prismatic ZnO mesocrystals.
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