Synthesis of α-Fe2O3 nanorod/graphene oxide composites and their tribological properties

Hao-Jie Song; Xiao-Hua Jia; Na Li; Xiao-Fei Yang; Hua Tang

doi:10.1039/C1JM13740A

Synthesis of α-Fe₂O₃nanorod/graphene oxide composites and their tribological properties

Hao-Jie Song,*^a Xiao-Hua Jia,^b Na Li,^a Xiao-Fei Yang^a and Hua Tang^a

* Corresponding authors

^a School of Materials Science and Engineering, Jiangsu University, Zhenjiang, P. R. China
E-mail: songhj@ujs.edu.cn
Fax: +86-511-88790191
Tel: +86-511-88790191

^b School of the Environment, Jiangsu University, Zhenjiang, P. R. China

Abstract

The composites of graphene oxide (GO) nanosheets fabricated by α-Fe₂O₃ nanorods were prepared through a facile hydrolysis route. As-synthesized α-Fe₂O₃ nanorods incorporated into GO nanosheets in the composites were observed with diameters of 3–5 nm and lengths of 15–30 nm. The formation mechanism of anchoring α-Fe₂O₃ nanorods onto GO nanosheets was proposed as the intercalation and adsorption of iron ions onto the surface of GO nanosheets, followed by the nucleation and growth of α-Fe₂O₃ nanorods. Tribological properties of α-Fe₂O₃ nanorod/GO composites as lubricating oil additive were investigated by employing a ball–plate tribotester. It is shown that anti-wear and reduced frictional abilities were improved by the addition of α-Fe₂O₃ nanorod/GO composites into the base oil. The oil with α-Fe₂O₃ nanorod/GO composites showed better tribological properties than those in the oil with GO nanosheets. Good friction and wear properties of α-Fe₂O₃ nanorod/GO composites can be explained by the combination of rolling effects between the rubbing surface and formed thin physical tribofilms on the substrate.

Article information

https://doi.org/10.1039/C1JM13740A

Article type

Paper

Submitted

04 Aug 2011

Accepted

17 Oct 2011

First published

14 Nov 2011

Download Citation

J. Mater. Chem., 2012,22, 895-902

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Synthesis of α-Fe₂O₃ nanorod/graphene oxide composites and their tribological properties

H. Song, X. Jia, N. Li, X. Yang and H. Tang, J. Mater. Chem., 2012, 22, 895 DOI: 10.1039/C1JM13740A

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Journal of Materials Chemistry