Abstract
A microwave-assisted solution-phase approach has been applied for the synthesis ofzinc oxide microstructures. Toe synthesis procedure was carried out by using the reagents: Zinc ni trate and Methenamine, at stoichiometric ratio. Analysis by means ofX-ray Diffraction (XRD) shows a crystalline phase in hexagonal wurtzite arrangement for ZnO. The presence ofmicrostar shaped zinc oxide (2-3μm) with nanorods,f50nm) arranged has been confirmed from High Resolution Scanning Electron Microscopy (HRSEM). The formation of nanorods was confirmed by Transmission Electron Microscopy. In Raman spectroscopy a red shift was detected in the microstructures compared with ZnO bulk. High crystalline materials without additional post-synthesis treatrnent were found.
Highlights
Resumen A microwave-assistedsolution-phaseapproach has been applied for the synthesis ofzinc oxide microstructures.Toe synthesis procedurewas carriedout by using thereagents:Zinc nitrate and Methenamine,at stoichiometricratio.Analysisby means ofX-ray Diffraction(XRD)showsa crystalline phase in hexagonal wurtzite arrangement for ZnO
The spectrum by XRD of the sample obtained at 1 minute is show in figure 1. In it can see a perfectly matching with the hexagonal wurtzite structure
The samples were analyzed by HRSEM, figure 2 present four images of the sample obtained at 1 minute
Summary
The spectrum by XRD of the sample obtained at 1 minute is show in figure 1. In it can see a perfectly matching with the hexagonal wurtzite structure. All images have shown the morphology of star-like shaped ZnO nanostructures. In figure 3 is show an image from TEM In it can see the structural arrangement of one of the nanorods that conforms the star morphology ofthe ZnO. This has a diameter that starts at 50nm.
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