Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 12 4 2016 11 01 Synthesis and Characterization of γ-Alumina Porous Nanoparticles from Sodium Aluminate Liquor with Two Different Surfactants 207 214 22929 EN A. Khazaei Department of Chemistry, Faculty of Science, Bu-Ali Sina University, P.O.Box 651783868, Hamadan, Iran S. Nazari Department of Engineering, Faculty of Engineering, Imam Khomeini International University, P.O. Box 3414916818, Qazvin, Iran Gh. Karimi Department of Engineering, Faculty of Engineering, Imam Khomeini International University, P.O. Box 3414916818, Qazvin, Iran E. Ghaderi Department of Chemistry, Faculty of Science, Bu-Ali Sina University, P.O.Box 651783868, Hamadan, Iran Kh. Mansouri Moradian Department of Chemistry, Faculty of Science, Bu-Ali Sina University, P.O.Box 651783868, Hamadan, Iran Z. Bagherpor Department of Engineering, Faculty of Engineering, Imam Khomeini International University, P.O. Box 3414916818, Qazvin, Iran S. Nazari Department of Civil Engineering, Faculty of Civil Engineering , Civil Engineering College of Hamedan P.O. Box 6515735617, Hamedan, Iran Journal Article 2014 10 30 Among the various phases of alumina, two phases γ and α are the most widely used in various industries. In this paper, γ-Al2O3 porous nanoparticles have been successfully synthesized from a simple aqueous sol–gel method using inexpensive material such as: sodium aluminate liquor, HCl, NaOH, Polyethylene glycol (PEG) and polyvinyl alcohol (PVA). Sodium aluminate liquor was extracted from Bayer liquor of alumina product processed in the Jajarm alumina factory. PEG and PVA were used as structure-stabilizing agents. The structures and properties of samples calcined at 800 ºC, were performed utilizing X-ray diffraction (XRD), infrared spectroscopy (FTIR), scanning electron microscopy (SEM), termogeravimetery analysis (TG/DTA), and N2 adsorption/desorption techniques. Prepared sample of γ-Al2O3 with polyethylene glycol surfactant has an average crystallite size of 2.313 nm, average particle size of 20 nm, specific surface area (SSA) of 138.8 m2/g, and pore volume of ∼ 0.166 cm3/g. The average crystallite size of 2.063 nm, average particle size of 46 nm, specific surface area of 201.1 m2/g, and pore volume of ∼ 0.246 cm3/g, were achieved using polyvinyl alcohol surfactant.

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