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Abstract: Iron carbides and nitrides have aroused great interest in researchers, due to their excellent magnetic properties, good machinability and the particular catalytic activity. Based on these advantages, iron carbides and nitrides can be applied in various areas such as magnetic materials, biomedical, photo‐ and electrocatalysis. In contrast to their simple elemental composition, the synthesis of iron carbides and nitrides still has great challenges, particularly at the nanoscale, but it is usually beneficial to improve performance in corresponding applications. In this review, we introduce the investigations about iron carbides and nitrides, concerning their structure, synthesis strategy and various applications from magnetism to the catalysis. Furthermore, the future prospects are also discussed briefly. [ABSTRACT FROM AUTHOR]

A new and simple method to fabricate magnetic Fe4N/Fe3C samples is reported. Meanwhile, pure phase iron carbides (θ-Fe3C and χ-Fe5C2) were obtained by controlling experimental conditions. The structures, magnetic properties, and morphology of the samples were investigated according to the generalized analysis of X-ray diffraction, X-ray photoelectron spectroscopy, as well as transmission electron microscopy and vibrating sample magnetometry. The magnetic properties measurement revealed the remarkable magnetic properties of the samples at 2 and 300 K. The application of the prepared samples as catalysts for oxygen evolution reaction was also investigated in alkaline solution. This simple and convenient route provides a new path to fabricate other metal nitrides and carbides. [ABSTRACT FROM AUTHOR]

The Fe 3 C nanoparticles were synthesized via a facile synthesis method. The structures, morphology and magnetic properties were investigated by X-ray diffraction, Raman spectra, X-ray photoelectron spectroscopy, transmission electron microscopy and vibrating sample magnetometer. It was found that the prepared nanoparticles possess the admirable magnetic moment, approaching to the theoretical value. More importantly, we briefly propose the synthesis mechanism. This simple and general approach provides a novel way to synthesize metal carbide. [ABSTRACT FROM AUTHOR]

The (Fe 1- x Nd x ) 3 C nanoparticles (NPs) were prepared by a sol-gel method. The structure, morphology and magnetic properties were investigated by X-ray diffraction, Raman spectra, transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). Analysis results show that the (Fe 1- x Nd x ) 3 C NPs were embedded in multi-walled carbon nanotubes and displayed ferromagnetic properties. And it is indicated that their saturation magnetization (M s ) values tend to decrease with increasing the Nd doping concentration. More importantly, we propose a possible mechanism to explain the formation process of the (Fe 1- x Nd x ) 3 C NPs. [ABSTRACT FROM AUTHOR]

Fe 3 C has been successfully prepared though a sol–gel process, performing good magnetic properties, whose saturated magnetization can be adjusted by the heating temperature. The introduction of hexamethylenetetramine (HMTA) improves the interference from Fe and ferrite, realizing a flexible and high-efficient route to iron carbide by tertiary amine. We believe the carbon-capsulated Fe 3 C will be a potential candidate in magnetic materials. [ABSTRACT FROM AUTHOR]