Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-19T07:22:11.164Z Has data issue: false hasContentIssue false
  • English
  • Français

Hydrothermal synthesis of well-dispersed TiO2 nano-crystals

Published online by Cambridge University Press:  31 January 2011

Juan Yang ,
Sen Mei  and
José M.F. Ferreira
Juan Yang
Affiliation:
Department of Ceramic and Glass Engineering, CICECO, University of Aveiro, 3810–193, Aveiro, Portugal
Sen Mei
Affiliation:
Department of Ceramic and Glass Engineering, CICECO, University of Aveiro, 3810–193, Aveiro, Portugal
José M.F. Ferreira
Affiliation:
Department of Ceramic and Glass Engineering, CICECO, University of Aveiro, 3810–193, Aveiro, Portugal
Get access

Abstract

Well-dispersed anatase and rutile nano-particles were prepared via hydrothermal treatment of tetrabutylammonium hydroxide-peptized and HNO3-peptized sols at 240 °C. A broad particle size distribution of anatase crystals was observed in the nonpeptized TiO2 species hydrothermally treated at 240 °C. X-ray diffraction and transmission electron microscopy, as well as zeta potential measurement, were used to characterize the particles. The formation of the well-dispersed anatase and rutile particles from the peptized samples could be attributed to (i) homogeneous distribution of the component in the peptized sols, and (ii) the high long-range electrostatic forces between particles in the presence of both peptizers, which were not present in the nonpeptized samples. This work provided a new way to prepare nano-crystals of titania.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 17 , Issue 9 , September 2002 , pp. 2197 - 2200
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Kim, S-J., Park, S-D., Jeong, Y.H., J. Am. Ceram. Soc. 82, 927 (1999).CrossRefGoogle Scholar
2.Yanagisawa, K., Yamamoto, Y., Feng, Q., and Yamasaki, N., J. Mater. Res. 13, 825 (1998).CrossRefGoogle Scholar
3.Yoshida, M., Lal, M., Kumar, N.D., and Prasad, P.N., J. Mater. Sci. 32, 4047 (1997).CrossRefGoogle Scholar
4.Ito, S., Yoshida, S., and Watanabe, T., Chem. Lett. January, 70 (2000).CrossRefGoogle Scholar
5.Oguri, Y., Riman, R.E., and Bowen, H.K., J. Mater. Sci. 23, 2897 (1988).CrossRefGoogle Scholar
6.Bucsa, R.R. and Gr, M.ätzel, J. Am. Ceram. Soc. 79, 2185 (1996).CrossRefGoogle Scholar
7.Cheng, H., Ma, J., Zhao, Z., and Qi, L., Chem. Mater. 7, 663 (1995).CrossRefGoogle Scholar
8.Yang, J., Mei, S., and Ferreira, J.M.F., J. Am. Ceram. Soc. 83, 1361 (2000).CrossRefGoogle Scholar
9.Yang, J., Mei, S., and Ferreira, J.M.F., J. Am. Ceram. Soc. 84, 1696 (2001).CrossRefGoogle Scholar
10.Guldberg-Pedersen, H. and Bergström, L., Acta Mater. 48, 4563 (2000).CrossRefGoogle Scholar
11.Israelachvili, J., Intermolecular and Surface Forces (Academic Press, London, United Kingdom, 1991).Google Scholar
12.Lewis, J.A., J. Am. Ceram. Soc. 83, 2341 (2000).CrossRefGoogle Scholar
13.Wells, A. F., Structural Inorganic Chemistry, 4th ed. (Clarendon Press, Oxford, United Kingdom, 1975), pp. 143, 200.Google Scholar