Synthesis and Characterization of Cr-Doped AL2O3 Nanoparticles Prepared Via Aqueous Combination Method

Chromium-doped Alumina was synthesized via combustion technique. Nanoparticles were produced from aluminum nitrate, ammonium dichromate, and sucrose. Silver nitrate was used as catalyst. The use of sucrose (C12H22O11) as dispersion agent and ammonium dichromate both as fuel and a doping agent source are new techniques in the synthesis of Cr-doped Al2O3 nanoparticles. The heat-treated powders were characterized by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Heat treatment of the nanoparticles was performed at temperatures of 900 °C, 1000 °C, and 1100 °C, which resulted in the formation of porous agglomerated chromium-doped alumina nanoparticles. Chromium-doped alumina with an average crystalline size of 35 nm was successfully synthesized via combustion technique with sucrose as fuel.