Publicação: Microwave-assisted hydrothermal synthesis of ZnO powders with different reagents
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Crc Press-taylor & Francis Group
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Resumo
In this work, zinc oxide powders were synthesized by microwave-assisted hydrothermal method in basic medium. These powders were analyzed by X-ray diffraction (XRD), Field-emisson gum scanning electron microscopy (FEG-SEM), Ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements. XRD pattern confirmed that the pure ZnO phases were obtained after MH processing performed at 130 degrees C/ lh. FEG-SEM micrographs reveals that these nanostructures are made up of ZnO plates. UV-vis results were employed to determine the optical band gap these materials. Also, it showed existence of photoluminescence (PL) in the different zinc powders. An orange PL emission when excited by 350 nm wavelength at room temperature was observad in the different powders.
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zinc oxide, microwave-hydrothermal, hexagonal structure, photoluminescence
Idioma
Inglês
Como citar
Nanotechnology 2012, Vol 1: Advanced Materials, Cnts, Particles, Films And Composites. Boca Raton: Crc Press-taylor & Francis Group, p. 405-408, 2012.
