High Specific Surface Area Ni-Al2O3 Nanocomposite Synthesized by Solution Combustion Method

This paper investigates the application of a mixture of three types of fuels, namely urea, glycine and hydrazine, for the synthesis of Ni-10 wt.% Al2O3 nanocomposite through solution combustion method. Nickel and aluminum nitrates are used as oxidizer. Because fuels have different reaction behaviors, the fuel mixture is used to achieve the highest surface area. The fuels are used at two different fuel to oxidizer ratios. The experiments are divided into eight groups. The results showed that changes in the fuel mixture have impact on the crystallite size and surface area of the synthesized nanocomposite. Four groups synthesized Ni-Al2O3 nanocomposite successfully. The BET test was taken to identify the surface properties of the produced nanocomposite. The results suggested that when hydrazine, glycine and urea are at 1.5, 1.5, and 1 level, respectively, the measured surface area for the synthesized nanocomposite in the air atmosphere and in less than 10 minutes was 207 m2/g.

کلیدواژه ها:

Nanocomposite ، Surface Area ، Solution Combustion ، FESEM