Abstract

GEL- COMBUSTION SYNTHESIS AND CHARACTERIZATION OF NANO- SIZED NiAl2O4

Prakash Patil, Bharat Pawar and Sunil Mirgane*

ABSTRACT

Gel-combustion synthesis of solid state route has been successfully developed for the synthesis of nano-sized NiAl2O4 spinel crystals. The procedure involves wet chemical mixing of nickel nitrate and aluminum nitrate and adding glycene with constant stirring where gel is formed. Resulting gel is heated on hot plate so that the combustion of gel takes place and char is formed, which is heated in muffle furnace at 900OC for 2 h. Thermal gravimetric analysis (TGA) is a method of thermal analysis in which changes in physical and chemical properties of materials are measured as a function of increasing temperature. The structural, morphological properties have been investigated using X-ray diffraction (XRD), scanning electron microscopy. The XRD study revealed the formation of crystalline NiAl2O4 nanosphere. The surface examination by SEM showed formation of nano-porous NiAl2O4 spinels.

Keywords: Gel-combustion, Wet Chemical, XRD, SEM, NiAl2O4.