The present study deals with the synthesis and characterization of aluminum oxide (Al2O3) nanopowders, it is very useful material as dielectric, ceramic and catalyst. The high-quality nanopowders were obtained by adding surfactants urea and sodium acetate. Further, all characterizations are done for with (urea and sodium acetate) and without surfactant. X-ray diffraction was used to characterize phase formation and the crystallite size of powder while, FTIR gives information about the particle composition and surface intermediates. X-ray diffraction spectra revealed the synthesized nanoparticles phase transformation were γ-Al2O3 to α-Al2O3 phase. Furthermore, the addition of urea and sodium acetate significantly reduced the crystalline size of α-Al2O3 nanoparticles from 43.94 nm to 35.12 nm respectively.

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