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Nanomaterials (Basel). 2019 Jul 21;9(7). pii: E1039. doi: 10.3390/nano9071039.

Effect of Ce Doping on the Structure and Chemical Stability of Nano-α-Fe2O3.

Author information

1
Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Wenhua Road, Heping District, Shenyang 110819, China.
2
Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Wenhua Road, Heping District, Shenyang 110819, China. shipy@smm.neu.edu.cn.
3
School of Metallurgical Engineering, Liaoning Institute of Science and Technology, Liaoning, Fragrance of huaihe road, High-tech Industrial Development District, Benxi 117004, China.

Abstract

Ce-doped nano-α-Fe2O3 was successfully synthesized via the hydrothermal method. The properties of the prepared particles were studied by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS) and electrochemical methods. It was found that the Ce element can be doped into the α-Fe2O3 lattice resulting in lattice distortion, which can refine the grain and improve the crystal surface's integrity significantly. In addition, doping of Ce element can shorten the Fe-O bond length in the α-Fe2O3 crystal, cause a blue shift of the stretching vibration band, enhance binding energy of Fe-O and the chemical stability of the α-Fe2O3 crystal.

KEYWORDS:

Ce-doping; chemical stability; composite; nano-α-Fe2O3

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