Plate-like or granular aluminum-doped zincite (AZO) nanostructure powders (NPs), Zn_1-xAl_xO, x=0.01, 0.03, 0.06, 0.09 and 0.11, were synthesized using a chemical precipitation method. Using of both reactants of zinc nitrate and aluminum nitrate as well as urea as the precipitating agent to get precursors. Then the precursors were calcined at 500^oC for three hours. The structure and morphology of the products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy. By the thermogravimetric analysis (TGA), precursors converted to oxides from hydroxides near about 250^oC and then take 500^oC for the temperature of the thermal processes of the precursor species. The results of inductively coupled plasma atomic emission spectrometer (ICP-AES) measurement ensured the stoichiometric ratio of Al/Zn in our ZAO NPs. XRD results showed that ZAO NPs with Al content less than 11% exhibited würtzite ZnO structure and there was no other impurity phase in the AZO NPs and Al atoms were doped into the ZnO lattice by substituting for zinc atoms. The grain size of AZO NPs were estimated as 31.9, 32.5, 16.9, 16.9 and 18.5 nm for x=0.01, 0.03, 0.06, 0.09 and 0.11 by using the Williamson-Hall equation, respectively. SEM images showed plate-like or granular. Raman data indicated that the more the concentration of the aluminum atoms is, the more the reduction of intensity of the polar mode A1(TO). This study provides a simple and efficient approach for synthesizing plate-like or granular AZO nanostructure.

1. POSTER: Synthesis and physical properties for Al-doped ZnO nanostructure powders with the chemical precipitation method, PDF document, version 1.5, 0.1MB

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