Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Synthesis of Hollow Cu Oxide Nanoparticles by Oxidation

산화에 의한 중공형 구리 산화물 나노입자 제조

  • Lee, Jung-Goo (Functional Materials Division, Korea Institute of Materials Science) ;
  • Baek, Youn-Kyoung (Functional Materials Division, Korea Institute of Materials Science) ;
  • Chung, Kook-Chae (Functional Materials Division, Korea Institute of Materials Science) ;
  • Choi, Chul-Jin (Functional Materials Division, Korea Institute of Materials Science)
  • 이정구 (한국기계연구원 부설 재료연구소 기능재료연구본부) ;
  • 백연경 (한국기계연구원 부설 재료연구소 기능재료연구본부) ;
  • 정국채 (한국기계연구원 부설 재료연구소 기능재료연구본부) ;
  • 최철진 (한국기계연구원 부설 재료연구소 기능재료연구본부)
  • Received : 2011.08.12
  • Published : 2011.12.25
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Abstract

In the present study, the formation of hollow Cu oxide nanoparticles through the oxidation process at temperatures from 200 to $300^{\circ}C$ has been studied by transmission electron microscopy with Cu nanoparticles produced by the plasma arc discharge method. The Cu nanoparticles had a thin oxide layer on the surface at room temperature and the thickness of this oxide layer increased during oxidation in atmosphere at $200-300^{\circ}C$ However, the oxide layer consisted of $Cu_2O$ and CuO after oxidation at $200^{\circ}C$ whereas this layer was comprised of only CuO after oxidation at $300^{\circ}C$ On the other hand, hollow Cu oxide nanoparticles are obtained as a result of vacancy aggregation in the oxidation processes, resulting from the rapid outward diffusion of metal ions through the oxide layer during the oxidation process.

Keywords

Acknowledgement

Supported by : 재료연구소

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