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http://dx.doi.org/10.4150/KPMI.2005.12.6.399

Fabrication of Transition-metal-incorporated TiO2 Nanopowder by Flame Synthesis  

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)
Publication Information
Journal of Powder Materials / v.12, no.6, 2005 , pp. 399-405 More about this Journal
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.
Keywords
Co-doped; Nanopowder; Flame synthesis; Electronic structure;
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