Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (9): 95-98.

• Materials Science & Technology • Previous Articles     Next Articles

Preparation of Zirconia-Doped Titania Nanopowders by Co-Precipitation Method and Corresp0nding Phase Transformation

Lu Ming  Rao Ping-gen  Wu Jian-qing   

  1. School of Materials Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-09-12 Online:2006-09-25 Published:2006-09-25
  • Contact: 吕明(1967-)，女，讲师，主要从事高性能陶瓷材料的研究 E-mail:immlv@scut.edu.cn
  • About author:吕明(1967-)，女，讲师，主要从事高性能陶瓷材料的研究
  • Supported by:

    广东省科技计划项目(2004B103101007)；华南理工大学自然科学基金资助项目(E5324182)

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Abstract:

In order to reveal the promotion or restraint of phase transformation caused by the doping of ions,nano-sized TiO2 doped with Zr4+ was prepared by means of co-precipitation method,respectively with the Zr mole frae-tions of 0,2% ,5% ,7% ,10% and 13% .The influence of Zr4+ doping on the phase transform ation of TiO2, fronano-sized anatase to rutile was then investigated. TEM results indicate that the prepared TiO2 anatase is 1 0 to 20 nm in diameter．XRD results show that the Zr4+ doping restrains the growth of anatase ertstallites,improves the start temperature of phase transform ation from 750℃ to 850℃ ．Moreover，in order to avoid the form ation of ZrTiO4 from the reaction of Zr and TiO2,the mole fraction of doped Zr4+should be less than 10% .

Key words: titania, zirconium, phase transformation, doping, co-precipitation