Synthesis and characterization of NiAl2O4 nanoparticles obtained through gelatin

Nanoparticles of NiAl2O4 were synthesized by heating (500–1000 °C) the dried resin resultant of a mixture in aqueous solution of gelatin, NiCl2·6H2O and AlCl3·6H2O. The particle size and microstrain were calculated from the line broadening of X-ray powder diffraction peaks through the Rietveld method refinement: these are 3.9–16 nm and − 0.743–0.139%, respectively. The NiAl2O4 nanoparticles were characterized by X-ray powder diffraction (XRPD), thermo gravimetric analysis (TG), BET and TEM techniques.