Abstract Al-doped ZnO Nanoparticles Research Articles

Al-Doped ZnO Nanoparticles Synthesized by Sonochemical-Assisted Method

Al-doped ZnO nanoparticles were synthesized by sonochemical method from zinc acetate dehydrate and aluminum acetate as starting precursors. The deionized (DI) water was selected as the solvent. Sonication of the precursor was performed by a Sonics Model VCX 750 for 30 minutes until precipitated product was finally obtained. The as-precipitated powders were calcined at different temperature range of 550-1100 °C for 2 hr. For all samples, their crystal structures were investigated by X-ray diffraction (XRD) and surface morphologies were observed by scanning electron microscope (SEM). The XRD results revealed that, the purity of as-synthesized powders increases when the calcination temperature increases. Moreover, it is noticed that the AlZnO partial peaks will appear when the as-synthesized powders were calcined at 800 – 1000 °C. In addition, SEM micrographs show the increase of agglomeration and the particles when the calcination temperature increases.

Synthesis of Al-Doped ZnO Nanoparticles and its Electromagnetic Performance

Al-doped ZnO (AZO) nanoparticles were synthesized by using homogeneous precipitation method from Zn(AC)2•2H2O and Al(NO3)3•9H2O. X-ray diffraction (XRD) showed that the AZO nanoparticles were well assigned to hexagonal wurtzite structure, and that the Al3+ did enter the ZnO crystal lattice to substitute the position of Zn2+. Results from scanning electron microscope (SEM) showed that with increasing Al content, the the size of ZAO particles decreased. When Al content was 5 mol%, gives a more homogeneous and finer microstructure. At last, study the electromagnetic performance of AZO particles with different doping concentration of Al3+.