Synthesis and characterization of Alumina (Al2O3) nanoparticles prepared by simple sol-gel method

Alumina is one of the most widely used ceramic materials as catalysts, catalyst supports and absorbents, and also wear resistant coating. This study focused on fabricating and characterizing of alumina ceramic nanoparticles fabricated using new and simple sol-gel method. Aluminium oxide (Al2O3) nanoparticles were synthesized by iron (III) nitrate 9-hydrate as precursor. Physicochemical properties were done using X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), field effect scanning electron microscopy (FESEM) and electron dispersive spectroscopy (EDS). As there are many forms of transition aluminas, XRD technique was used to identify α-alumina and γ-alumina. The mean particle size of the sphere-like as-prepared sample was around 28 nm estimated by XRD technique and direct TEM observation. The surface morphological studies from SEM depicted grain particles with less agglomeration to sphere-like shape nano-sized Al2O3 by increasing annealing temperature. The obtained prticles are spherical and in non-agglomerated state. EDS shows peaks of aluminium and oxygen in prepared Al2O3.

[1]  M. Karim,et al.  Synthesis of γ-Alumina Particles and Surface Characterization , 2011 .

[2]  H. Mohamad,et al.  Effect of stirring time on synthesis of ultra fine x-Al2O3 powder by a simple sol-gel method. , 2011 .

[3]  E. Andronescu,et al.  SYNTHESIS AND CHARACTERIZATION OF ALUMINA NANO-POWDER OBTAINED BY SOL-GEL METHOD , 2011 .

[4]  W. Suchanek.  Hydrothermal Synthesis of Alpha Alumina (α‐Al2O3) Powders: Study of the Processing Variables and Growth Mechanisms , 2010 .

[5]  Bo Zhang,et al.  Preparation of magnetic γ‐Al2O3 supported palladium catalyst for hydrogenation of nitrobenzene , 2008 .

[6]  K. Das,et al.  A review on the synthesis of in situ aluminum based composites by thermal, mechanical and mechanical–thermal activation of chemical reactions , 2007 .

[7]  Yoshio Kobayashi,et al.  Preparation of alumina films by the sol-gel method , 2005 .

[8]  H. Einaga,et al.  Comparative study on the catalytic activities of alumina-supported metal oxides for oxidation of benzene and cyclohexane with ozone , 2004 .

[9]  B. Rode,et al.  Alumina catalyzed reactions of amino acids , 2003 .

[10]  W. Poole,et al.  In situ measurement of reinforcement stress in an aluminum-alumina metal matrix composite under compressive loading , 2003 .

[11]  G. Villasenor,et al.  Structure and properties of Zn-Al-Cu alloy reinforced with alumina particles , 2003 .

[12]  K. Sandhage,et al.  Rapid synthesis of Al2O3 reinforced Fe–Cr–Ni composites , 2003 .

[13]  P. Colomban,et al.  Structural evolution in polyolysed hybrid organic-inorganic alumina gels , 2000 .

[14]  S. Kaliaguine,et al.  Structural transformations of alumina by high energy ball milling , 1993 .

[15]  Larry L. Hench,et al.  Bioceramics: From Concept to Clinic , 1991 .

[16]  S. Sakka.  Sol-gel processing of insulating, electroconducting and superconducting fibers , 1990 .