Structural investigation on Preparation of Sb-Doped Nanocrystalline α-Fe2O3 by Sol-Gel Method

Abstract

Abstract: The Sb-doped nanocrystalline α-Fe₂O₃ powders were prepared by sol-gel method with FeCl₃·6H₂O as the source
substance. The phase transformation and microstructure of the systems were investigated by XRD, Mossbauer spectrometer, DTA
and TEM. The dry gel is found to be Fe(OH)₃ amorphous phase, it transforms to nanocrystalline α-Fe₂O₃ by annealing at a
certain temperature. When the system is doped with Sb, the impurities distribute on the surface of the Fe(OH)₃ amorphous particles. They have no obvious influence on the inner structure of Fe(OH)₃
but evidently enhance crystallization temperature, thus take the role of restraining the formation and growth of α-Fe₂O₃
grains, and are favourable for obtaining α-Fe₂O₃ nanocrystalline powder.

Key words: nanocrystalline powder, doping, phase transformation

CLC Number:

TF123

WANG Yuan-Sheng,LI Jian. Structural investigation on Preparation of Sb-Doped Nanocrystalline α-Fe₂O₃ by Sol-Gel Method[J]. Journal of Inorganic Materials.

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Structural investigation on Preparation of Sb-Doped Nanocrystalline α-Fe₂O₃ by Sol-Gel Method

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