Tribological Properties of Oleic Acid Capped Copper Nanoparticles Prepared by the Solventless Thermolysis of Single-Source Precursor

Abstract:

Oleic acid capped copper nanoparticles were prepared by the solventless thermolysis of single-source precursor, cupric oleate. OA-capped Cu nanoparticles were characterized by means of FT-IR, TEM, XRD and TGA. Results show that OA-capped Cu nanoparticles with an average diameter of about 40 nm, which are able to prevent water adsorption, oxidation and are capable of being dispersed stably in organic solvents or mineral oil. This approach offers a great deal of facilitating their production without the need of protection by inert gases or sealed containers. In this process, only the preparation condition temperature has an obvious effect on the size and component of the product. OA-capped Cu nanoparticles as an additive in PAO10 perform good anti-wear and friction-reduction properties. As the additive concentration reach to 0.5 wt. %, the wear scar diameter can be reduced by 18 % and the friction coefficient can be reduced by 13 % as compared to pure PAO10.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 1131-1139
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.1131
• Online since: July 2012
• Authors: Nan Li*, Pu Guo, Wen Jing Lou, Shuang Chen
• Keywords: Additive, Anti-Wear, Copper, Nanotribology

References

[1] H. Yao, O. Momozawa, T. Hamatani, K. Kimura, Stepwise size-selective extraction of carboxylate-modified gold nanoparticles from an aqueous suspension into toluene with tetraoctylammonium cations, Chem. Mater. Vol. 13 (2001), p.4692.

DOI: 10.1021/cm0104957

[2] S.A. Jadhav, Functional self-assembled monolayers (SAMs) of organic compounds on gold nanoparticles, J. Mater. Chem. Vol. 22 (2012), p.5894.

DOI: 10.1039/c2jm14239b

[3] K.H. Lee, Y.J. Hwang, S.G. Cheong, Y.M. Choi, L. Kwon, J.K. Lee, S.H. Kim, Understanding the role of nanoparticles in nano-oil lubrication, Tribol. Lett. Vol. 35 (2009), pp.127-131.

DOI: 10.1007/s11249-009-9441-7

[4] V.N. Bakunin, A.Y. Suslov, G.N. Kuz'mina, L.M. Vedeneeva, O.P. Parenago, C.A. Migdal, P.E. Stott, A.V. Topchiev, Surface-capped molybdenum sulphide nanoparticles - a novel type of lubricant additive, Lubri. Sci. Vol. 16 (2004), p.207.

DOI: 10.1002/ls.3010160302

[5] L. Rapoport, N. Fleischer, R. Tenne, Fullerene-like WS2 nanoparticles: Superior lubricants for harsh conditions, Adv. Mater. Vol. 15 (2003), p.651.

DOI: 10.1002/adma.200301640

[6] I.V. Frishberg, N.V. Kishoparov, L.V. Zolotukhina, V.V. Kharlamov, O.K. Baturina, S.V. Zhidovinova, Effect of ultrafine powders in lubricants on performance of friction pairs, Wear. Vol. 254 (2003), p.645.

DOI: 10.1016/s0043-1648(03)00259-x

[7] S. Chen, N. Li, Synthesis and characterization of DDP-coated PbO nanoparticles, J. Mater. Chem. Vol. 12 (2002), p.1124.

DOI: 10.1039/b110309a

[8] H.L. Yu, Y. Xu, P.J. Shi, B.S. Xu , X.L. Wang, Q. Liu, H.M. Wang, Tribological properties and lubricating mechanisms of Cu nanoparticles in lubricant, Trans. Nonferrous Met. Soc. Vol. 18 (2008), p.636.

DOI: 10.1016/s1003-6326(08)60111-9

[9] X.H. Kang, B. Wang, L. Zhu, H. Zhu, Synthesis and tribological property study of oleic acid-modified copper sulfide nanoparticles, Wear. Vol. 265 (2008), p.1633.

DOI: 10.1016/j.wear.2007.09.009

[10] W.J. Lou, M. Chen, X.B. Wang, W.M. Liu, Novel single source precursors approach to prepare highly uniform Bi2S3 and Sb2S3 nanorods via a solvothermal treatment, Chem. Mater. Vol. 19 (2007), p.872.

DOI: 10.1002/chin.200719193

[11] T.P. Duan, W.J. Lou, X.B. Wang, Q.J. Xue, Size-controlled synthesis of orderly organized cube-shaped lead sulfide nanocrystals via a solvothermal single-source precursor method, Colloids and Surfaces A: Physicochem. Eng. Aspects. Vol. 310 (2007), p.86.

DOI: 10.1016/j.colsurfa.2007.06.006

[12] X.Y. Chen, Z.J. Zhang, X.F. Zhang, J.W. Liu, Y.T. Qian, Single-source approach to the synthesis of In2S3 and In2O3 crystallites and their optical properties, Chem. Phys. Let. Vol. 407 (2005), p.482.

DOI: 10.1016/j.cplett.2005.03.141

[13] W. Liu, Low temperature synthesis of hexagonal phase ZnS nanocrystals by thermolysis of an air-stable single-source molecular precursor in air, Mater. Let. Vol. 60 (2006), p.551.

DOI: 10.1016/j.matlet.2005.09.033

[14] W.M. Zhang, Z.X. Sun, W. Hao, D.W. Su, D.J. Vaughan, Synthesis of size tuneable cadmium sulphide nanoparticles from a single source precursor using ammonia as the solvent, Mater. Res. Bull. Vol. 46 (2011), p.2266.

DOI: 10.1016/j.materresbull.2011.08.062

[15] S. Chen, W.M. Liu, Oleic acid capped PbS nanoparticles: Synthesis, characterization and tribological properties, Mater. Chem. Phys. Vol. 98 (2006), p.183.

DOI: 10.1016/j.matchemphys.2005.09.043