Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Characterization of CoFe2O4/SiO2 using Cobalt Precursors from Recycling Waste Cemented Carbide

폐 초경합금에서 추출된 Co를 이용한 CoFe2O4/SiO2 합성 및 특성평가

  • Yu, Ri (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology) ;
  • Pee, Jae-Hwan (Ceramicware Technology Center, Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Yoo-Jin (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology)
  • 유리 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 피재환 (한국세라믹기술원 도자기술센터) ;
  • 김유진 (한국세라믹기술원 엔지니어링세라믹센터)
  • Received : 2011.08.17
  • Accepted : 2011.09.20
  • Published : 2011.09.30
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Abstract

We report the preparation of nanocrystalline cobalt ferrite, $CoFe_2O_4$, particles using recycled $Co_3O_4$ and their surface coating with silica using micro emulsion method. Firstly, the $Co_3O_4$ powders were separated from waste cemented carbide with acid-base chemical treatment. The cobalt ferrite nanoparticles with the size 10 nm are prepared by thermal decomposition method using recycled $Co_3O_4$. $SiO_2$ was coated onto the $CoFe_2O_4$ particles by the micro-emulsion method. The $SiO_2$-coated $CoFe_2O_4$ particles were studied their physical properties and characterized by X-ray diffraction (XRD), high resolution-transmission electron microscopy (TEM) analysis and CIE Lab value.

Keywords

References

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