Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of the Flow Rate of Flame Gases on the Crystal Structure of TiO2 Nanopowder Synthesized by Flame Method

화염법으로 제조된 TiO2 나노분말의 결정구조에 미치는 화염가스 유량의 영향

  • 지현석 (한국과학기술연구원 나노재료연구센터, 고려대학교 재료금속공학부) ;
  • 안재평 (한국과학기술연구원 나노재료연구센터) ;
  • 허무영 (고려대학교 재료금속공학부) ;
  • 박종구 (한국과학기술연구원 나노재료연구센터)
  • Published : 2003.12.01
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Abstract

$TiO_2$ nanopowder has been synthesized by means of the flame method using a precursor of titanium tetraisopropoxide (TTIP, Ti$(OC_3H_7)_4)$. In order to clarify the effect of cooling rate of hot flame on the formation of $TiO_2$ crystalline phases, the flame was controlled by varying the mixing ratio and the flow rate of gases. Anatase phase was predominantly synthesized under the condition having the steep cooling gradient in flame, while a slow cooling gradient enabled to form almost rutile $TiO_2$ nanopowder of above 95%.

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References

  1. J. C. Bailar, H. J. Elemeleus, R. Nyholm and A. F. Trotman-Dickenson : Comprehensive Inorganic Chemistry, Pergamon Press, UK (1973) 357.
  2. Teruhisa Ohno, Koji Sarukawa, Kojiro Tokieda and Michio Matsumura : J. Catalysis, 203 (2001) 82. https://doi.org/10.1006/jcat.2001.3316
  3. S. Morooka, T. Yasutake, A. Kobata, K. Ikemizu and Y.Kato: Int. Chem. Engr., 29 (1989) 1.
  4. M. Akhtar, Y. Xiong and S. Pratsinis : AIChE, 37 (1991) 10. https://doi.org/10.1002/aic.690371013
  5. Y. Suyama, K. Ito and A. Kato, J. Inorg. Nucl. Chem. 37 (1975) 1883. https://doi.org/10.1016/0022-1902(75)80907-9
  6. C. Hung, P. F. Miquel and J. L. Katz, J. Mater. Res. 8 (1993) 2404. https://doi.org/10.1557/JMR.1993.2404
  7. S. E. Pratsinis, W. Zhu and S. Vemury : Powder Tech. 86 (1996) 87. https://doi.org/10.1016/0032-5910(95)03041-7
  8. G. P. Fotou, S. Vemury and S. E. Pratsinis : Chem. Eng. Sci., 49 (1994) 4939. https://doi.org/10.1016/0009-2509(94)00394-7
  9. H. D. Jang and S. K. Kim : Mater. Res. Bull., 36 (2001) 627. https://doi.org/10.1016/S0025-5408(01)00552-9
  10. G. Yang, Haoren Zhuang and P. Biswas : NanoStruct. Mater.,7 (1996) 675. https://doi.org/10.1016/0965-9773(96)00033-5
  11. D. Lee: Ph. D Thesis, Seoul National Univ. (2000)
  12. R. A. Spurr and H. Myers : Anal. Chem. Res. 29 (1957) 760. https://doi.org/10.1021/ac60125a006
  13. B. D. Cullity and S. R. Stock: X-ray Diffraction, Prentice Hall (2001) 170.
  14. Y. Li and T. Ishigaki : J. Crystal Growth, 242 (2002) 511. https://doi.org/10.1016/S0022-0248(02)01438-0
  15. R. Roy and W. White: J. Crystal Growth, 13/14 (1972) 78. https://doi.org/10.1016/0022-0248(72)90066-8
  16. R. McPherson: J. Mater. Sci. 8 (1973) 851. https://doi.org/10.1007/BF02397914

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