Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Fabrication of Transition-metal-incorporated TiO2 Nanopowder by Flame Synthesis

화염법에 의한 천이금속 첨가 이산화티타늄 나노분말의 제조

  • Park Hoon (Nano-materials research center, Korea institute of science and technology) ;
  • Jie Hyunseock (Nano-materials research center, Korea institute of science and technology) ;
  • Lee Seung-Yong (Nano-materials research center, Korea institute of science and technology) ;
  • Ahn Jae-Pyoung (Nano-materials research center, Korea institute of science and technology) ;
  • Lee Dok-Yol (Department of materials science and engineering, Korea university) ;
  • Park Jong-Ku (Nano-materials research center, Korea institute of science and technology)
  • 박훈 (한국과학기술연구원 나노재료연구센터) ;
  • 지현석 (한국과학기술연구원 나노재료연구센터) ;
  • 이승용 (한국과학기술연구원 나노재료연구센터) ;
  • 안재평 (한국과학기술연구원 나노재료연구센터) ;
  • 이덕열 (고려대학교 신소재공학부) ;
  • 박종구 (한국과학기술연구원 나노재료연구센터)
  • Published : 2005.12.01
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Abstract

Nanopowders of titanium dioxide $(TiO_2)$ incorporating the transition metal element(s) were synthesized by flame synthesis method. Single element among Fe(III), Cr(III), and Zn(II) was doped into the interior of $TiO_2$ crystal; bimetal doping of Fe and Zn was also made. The characteristics of transition-metal-doped $TiO_2$ nanopowders in the particle feature, crystallography and electronic structures were determined with various analytical tools. The chemical bond of Fe-O-Zn was confirmed to exist in the bimetal-doped $TiO_2$ nanopowders incorporating Fe-Zn. The transition element incorporated in the $TiO_2$ was attributed to affect both Ti 3d orbital and O 2p orbital by NEXAFS measurement. The bimetal-doped $TiO_2$ nanopowder showed light absorption over more wide wavelength range than the single-doped $TiO_2$ nanopowders.

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References

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