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Hydrothermal extraction of a-Fe2O3 nanocrystallite from hematite ore
N.M. Khalil,M.M.S. Wahsh,Elhadi E. Saad 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
a-Fe2O3 nanocrystallite has been extracted from its ore raw material by using simple chemical method. Mineralogical and chemical compositions of the raw material were investigated using X-ray diffraction(XRD), infrared (IR) and X-ray fluorescence (XRF) techniques. Also, thermal behavior includingthermogravimetry (TG) and differential thermal analysis (DTA) of the raw material was examined. Scherrer’s equation and XRD data were used to determinate the crystallite size and phase composition ofthe extracted hematite nanocrystallite. Morphology of the extracted a-Fe2O3 particles was tested usingscanning electron microscope (SEM). About 96.80% of the total iron oxide present in the rawmaterial sample was extracted as a-Fe2O3 withthe average crystallite size less than 100 nm. The extracted a-Fe2O3 nanocrystallite is considered as apromise material for great technological applications as ceramic humidity sensors, catalysts, pigments,ferrofluid, recording systems, etc.