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Journal of Materials Science

, Volume 42, Issue 18, pp 7638–7642 | Cite as

A new method for preparing hydrophobic nano-copper powders

  • Yang Jian-guangEmail author
  • Zhou Yuang-lin
  • Takeshi Okamoto
  • Ryoichi Ichino
  • Masazumi Okido
Article

Abstract

A novel chemical process for producing hydrophobic nano-copper particles with satisfied anti-oxidation property is described here. The resultant particles have been characterized by X-ray diffraction, size distribution analysis and SEM, TEM observation. Well-dispersed nano-copper particles with c.a. 30 nm in diameter were obtained from the water/organic solution containing 0.2M Cu2+ ion, glucose as the first reductant, ascorbic acid as the second reductant. In this process, oleic acid acted as both a phase-transfer agent and a particle protector coordinating their carboxyl end groups on the new generated copper particles surface, the hydrophobic carbon tails of the oleic acids were pointed outwards from the surface of the synthesized particles. This organic film seems to play an important role for prevent the new generated copper particles from oxidation. In addition, this process also adopting two-step reduction method can lead compulsively disconnect nucleation and nucleation growth, and weaken conventional eruptible nucleation. By controlling the first reduction product’s size, this process is more convenient for delaying the nuclei processes and for controlling the ultimate copper particles size.

Keywords

Oleic Acid Cu2O Copper Sulfate Hydrophobic Property Copper Particle 

Notes

Acknowledgments

This work is supported by COE program of Department of Material Science and Engineering, Nagoya University. The authors sincerely thank their fund support.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Yang Jian-guang
    • 1
    • 2
    Email author
  • Zhou Yuang-lin
    • 3
  • Takeshi Okamoto
    • 1
  • Ryoichi Ichino
    • 1
  • Masazumi Okido
    • 1
  1. 1.Department of Materials Science and Engineering, Graduate School of EngineeringNagoya UniversityChikusa-ku, NagoyaJapan
  2. 2.School of Metallurgy Science and EngineeringCentral South UniversityHu NanP.R. China
  3. 3.Environmental Engineering Vocational CollegeJiangXiP.R. China

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