The charged nano-Al2O3 particles were successfully prepared by sol-gel method, and different approaches including scanning electron microscope, X-ray diffraction and Fourier transforms infrared spectrometry were used to characterize the Al2O3 nanoparticles. Meanwhile, the zeta potentials of Al2O3 nanoparticles were thoroughly investigated in this paper. The analysis results indicated that the prepared Al2O3 nanoparticles were found spherical in shape and demonstrated weak agglomeration. They had a fine crystal phase with a mean size of about 13.2nm. The analysis of Zeta potential demonstrated ...
