Surfactant-Assisted Combustion Method for the Synthesis of α-Fe 2 O 3 Nanocrystalline Powders (original) (raw)

In this present work, a new surfactant-assisted combustion method has been performed to synthesize α-Fe2O3 powders by using iron nitrate as an oxidizer, glycine as a fuel and TWEEN 80 as a non-ionic surfactant. The effects of the fuel at different molar ratios assisted with surfactant are investigated with XRD, DT/TGA, UV-Vis Spectroscopy, FT-IR and SEM techniques. The investigation range of molar ratios of oxidizer is 0.1M; fuels are of molar ratios 0.1M, 0.15M, 0.2M, 0.25M and 0.3M and with surfactant ratio 0.07M have been studied. Structural characterization of different samples is investigated by X-ray Diffractometer. From X-ray Diffraction data lattice parameters, crystallite sizes, micro strains, cell volumes and porosities of the samples are calculated. The average crystallite sizes of the samples are obtained by Debye-Schererr's formula and Williamson-Hall plot. The XRD result also indicates rhombohedral system (R3c) with lattice parameters a=5.035Ao and c= 13.748Ao with the JCPDS data card no: 33-0664. Thermal studies of the samples are analyzed by TG/DTA analysis. Particle size distributions were observed by Particle size analyzer. Surface morphology of the samples is studied by scanning electron microscopy.