Synthesis of Hollow Nanoparticles γ-Al₂O₃

Dmitry V. Smovzh, Nikolay A. Kalyuzhnyi, Alexey V. Zaikovsky, Sergey A. Novopashin

Kutateladze Institute of Thermophysics of Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia.

DOI: 10.4236/anp.2013.22020                

Abstract

The formation of hollow nanoparticles of alumina was detected when nanostructured carbon–aluminum material, synthesized by composite electrode sputtering in an electric arc, was annealed in oxygen. The synthesized material was characterized by the methods of transmission electron microscopy, thermogravimetry, and roentgen-phase analysis. It is shown that the alumina is the γ-phase; the typical size of particles is 6 - 12 nm and they have a wall thickness of 2 - 3 nm. The mechanism of formation of the hollow nanoparticles of alumina is suggested.

Keywords

Hollow Nanoparticles; Аlumina; Arc Discharge

Conflicts of Interest

The authors declare no conflicts of interest.

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