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- 화염법에 의한 천이금속 첨가 이산화티타늄 나노분말의 제조
- 박훈, 지현석, 이승용, 안재평, 이덕열, 박종구
- Fabrication of Transition-metal-incorporated TiO2 Nanopowder by Flame Synthesis
- Hoon Park, Hyunseock Jie, Seung-Yong Lee, Jae-Pyoung Ahn, Dok-Yol Lee, Jong-Ku Park
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Journal of Korean Powder Metallurgy Institute 2005;12(6):399-405
DOI: https://doi.org/10.4150/KPMI.2005.12.6.399
2한국과학기술연구원 나노재료연구센터
3한국과학기술연구원 나노재료연구센터
4한국과학기술연구원 나노재료연구센터
5고려대학교 신소재공학부
6한국과학기술연구원 나노재료연구센터
1Nano-materials research center, Korea institute of science and technology
2Nano-materials research center, Korea institute of science and technology
3Nano-materials research center, Korea institute of science and technology
4Nano-materials research center, Korea institute of science and technology
5Department of materials science and engineering, Korea university
6Nano-materials research center, Korea institute of science and technology
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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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