반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

수열합성법을 이용한 세륨산화물 나노분말의 특성 및 합성에 대한 연구

Synthesis and Characterization of $CeO_2$ Powders by the Hydrothermal Process

  • 공명호 (인하대학교 신소재 공학부) ;
  • 나한길 (인하대학교 신소재공학부) ;
  • 김현우 (인하대학교 신소재공학부) ;
  • 양학희 (인하공업전문대학 금속재료과)
  • Kong, Myung-Ho (School of Materials Science and Engineering, Inha University) ;
  • Na, Han-Gil (School of Materials Science and Engineering, Inha University) ;
  • Kim, Hyoun-Woo (School of Materials Science and Engineering, Inha University) ;
  • Yang, Hack-Hui (Department of Metallurgical & Materials Engineering, Inha Technical College)
  • 투고 : 2010.05.28
  • 심사 : 2010.06.15
  • 발행 : 2010.06.30
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초록

We have successfully synthesized $CeO_2$ nanopowders by means of the hydrothermal method, in a low temperature range of $100-200^{\circ}C$. In order to investigate the structure and morphology of the nanopowders, scanning electron microscopy and X-ray diffraction have been employed. In addition, for exploring the optical properties, Raman spectroscopy, Fourier transform infrared spectroscopy, and photoluminescence spectroscopy have been used. In the optimized condition, with the pH, velocity, and time of 4.5, 600 rpm, and 60 h, the $CeO_2$ nanopowders with a diameter ranging from 50 to 150 nm have been synthesized. The nanopowders exhibited the visible emission mainly in the blue region. With comparing the reaction time, it is revealed that the extinction of functional groups at 60 h contributed to the growth and homogenization of the $CeO_2$ powders. Since the overgrowth and agglomeration of nanopowders were found, we suggest that the cracking/growth process is more favorable mechanism than the dissolution/precipitation process.

키워드

참고문헌

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