Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Dispersion of SmxCe1-xO2-2/x Nanoparticles which is Synthesized by Hydrothermal Process in Aqueous System

수열합성법으로 합성된 나노 SmxCe1-xO2-2/x 분말의 수계 분산

  • Bae Dong-Sik (Dept. of Ceram. Sci. & Eng., Changwon National Univ.) ;
  • Kim Eun-Jung (Division of Ceramics, Korea Institute of Science and Technology) ;
  • Han Kyong-Sop (Division of Ceramics, Korea Institute of Science and Technology)
  • 배동식 (창원대학교 세라믹공학과) ;
  • 김은정 (한국과학기술연구원 재료연구부) ;
  • 한경섭 (한국과학기술연구원 재료연구부)
  • Published : 2005.02.01
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Abstract

Dispersion stability of the $Sm_xCe_{1-x}O_{2-2/x}$ nanoparticles, which was produced by hydrothermal process, was studied in aqueous suspension using ESA (Eletrokinetic Sonic Amplitude). The average particle size of the synthesized $Sm_xCe_{1-x}O_{2-2/x}$ at nanoparticles was about $5{\pm}2nm$. The dispersion and rheological behavior of the $Sm_xCe_{1-x}O_{2-2/x}$ nanoparticles aqueous suspension was investigated using $NH_4OH\;and\;HNO_3$ as a disperse agent. The colloidal stability of aqueous suspensions with $Sm_xCe_{1-x}O_{2-2/x}$ nanoparticles at different pH values has been investigated by means of zeta potential, average particle size, and the distribution of synthesized $Sm_xCe_{1-x}O_{2-2/x}$ nanoparticles. The isoelectric point of the $Sm_xCe_{1-x}O_{2-2/x}$ nanoparticles was at pH around 11 and the value of zeta potential was at its maximum near pH 6.5.

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References

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