Magnetic γ'-Fe4 N/Fe3 C, χ-Fe5 C2 , and θ-Fe3 C by a Simple Route for Application as Electrochemical Catalysts

Xiang Lei; Zhantong Ye; Nan Zhao; Feifei Lei; Hua Yang

doi:10.1002/chem.201704214

Magnetic γ'-Fe₄ N/Fe₃ C, χ-Fe₅ C₂ , and θ-Fe₃ C by a Simple Route for Application as Electrochemical Catalysts

Chemistry. 2017 Dec 11;23(69):17592-17597. doi: 10.1002/chem.201704214. Epub 2017 Nov 15.

Authors

Xiang Lei¹, Zhantong Ye¹, Nan Zhao¹, Feifei Lei¹, Hua Yang¹

Affiliation

¹ College of Chemistry, Jilin University, Changchun, 130012, China.

PMID: 28948671
DOI: 10.1002/chem.201704214

Abstract

A new and simple method to fabricate magnetic Fe₄ N/Fe₃ C samples is reported. Meanwhile, pure phase iron carbides (θ-Fe₃ C and χ-Fe₅ C₂ ) 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.

Keywords: electrochemistry; high saturation magnetization; magnetic properties; nanocrystals; oxygen evolution reaction.