Skip to main content

Effect of external fields applied during hot-water treatment on the aspect ratio of nanocrystallites formed on SiO2·TiO2 coatings derived from sol–gel techniques

Abstract

SiO2·TiO2 coatings were prepared by a sol–gel route. The effect of the external fields including mechanical vibration and electric charge applied during hot-water treatment on titania precipitation at the surface of the coatings was investigated. The shape of the resulting precipitates tended to elongate by applying vibration in a parallel or perpendicular direction, or by applying an electric charge. The organization of titania nanocrystallites possibly occurs because of the concentration gradient of dissolved titania species generated by the external fields during the hot-water treatment. A maximum aspect ratio of 38.1 was achieved for the precipitate prepared by hot-water treatment performed under parallel vibration for 5 h. The shape of the resulting precipitates was also influenced by the content of TiO2 in the SiO2·TiO2 coating, with a smaller proportion of TiO2 increasing the aspect ratio of the resulting precipitate.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

References

  1. Matthews RW (1988) J Catal 113:549

    CAS  Article  Google Scholar 

  2. Keshavaraja A, Ramaswamy V, Soni HS, Ramaswamy AV, Ratnasamy P (1995) J Catal 157:501

    CAS  Article  Google Scholar 

  3. Anderson C, Bard AJ (1995) J Phys Chem B 99:9882

    CAS  Article  Google Scholar 

  4. Anderson C, Bard AJ (1997) J Phys Chem B 101:2611

    CAS  Article  Google Scholar 

  5. Brinker CJ, Harrington MS (1981) Sol Energy Mat 5:159

    CAS  Article  ADS  Google Scholar 

  6. Lukosz W, Tiefenhaler KT (1983) Opt Lett 8:537

    CAS  Article  ADS  PubMed  Google Scholar 

  7. Yu-Zhang K, Boisjolly G, Rivory J, Kilian L, Colliex C (1994) Thin Solid Films 253:299

    CAS  Article  ADS  Google Scholar 

  8. Du XM, Almeida RM (1996) J Mater Res 11:353

    CAS  Article  ADS  Google Scholar 

  9. Matsuda A, Sakai M, Kogure T, Tadanaga K, Tatsumisago M (2006) J Ceram Soc Jpn 114:26

    CAS  Article  Google Scholar 

  10. Imai H, Morimoto H, Tominaga A, Hirashima H (1997) J Sol-Gel Sci Techn 10:45

    CAS  Article  Google Scholar 

  11. Imai H, Awazu K, Yasumori M, Onuki H, Hirashima H (1997) J Sol-Gel Sci Techn 8:365

    CAS  Google Scholar 

  12. Sheng Y, Liang L, Xu Y, Wu D, Sun Y (2008) Opt Mater 30:1310

    CAS  Article  ADS  Google Scholar 

  13. Yun YJ, Chung JS, Kim S, Hahn SH, Kim EJ (2004) Mater Lett 58:3703

    CAS  Article  Google Scholar 

  14. Matsuda A, Kotani Y, Kogure T, Tatsumisago M, Minami T (2000) J Am Ceram Soc 83:229

    CAS  Article  Google Scholar 

  15. Jung KY, Park SB (2004) Mater Lett 58:2897

    CAS  Article  Google Scholar 

  16. Guan K (2005) Surf Coat Tech 191:155

    CAS  Article  Google Scholar 

  17. Djaoued Y, Thibodeau M, Robichaud J, Balaji S, Priya S, Tchoukanova N, Bates SS (2008) J Photoch Photobio A 193:271

    CAS  Article  Google Scholar 

  18. Matsuda A, Matoda T, Kogure T, Tadanaga K, Minami T, Tatsumisago M (2004) J Sol-Gel Sci Techn 31:229

    CAS  Article  Google Scholar 

  19. Matsuda A, Matoda T, Kogure T, Tadanaga K, Minami T, Tatsumisago M (2005) Chem Mater 17:749

    CAS  Article  Google Scholar 

  20. Prastomo N, Daiko Y, Kogure T, Muto H, Sakai M, Matsuda A (2009) Mater Sci Eng B-Adv 161:170

    CAS  Article  Google Scholar 

  21. Matsuda A, Kobayashi K, Kogure T, Sakai M, Tadanaga K, Minami T, Tatsumisago M (2005) J Ceram Soc Jpn 113:333

    CAS  Article  Google Scholar 

  22. Matsuda A, Matoda T, Kogure T, Tadanaga K, Minami T, Tatsumisago M (2005) J Mater Res 20:256

    CAS  Article  ADS  Google Scholar 

  23. Penn RL, Banfield JF (1999) Geochim Cosmochim Ac 63:1549

    CAS  Article  ADS  Google Scholar 

Download references

Acknowledgments

This work was partially funded by the Japan Society for the Promotion of Science (JSPS) (Grant-in-Aid for Scientific Research (B) No. 20360268). N.P. acknowledges ASEAN University Network/Southeast Asia Engineering Education Development Network (AUN/SEED-Net) and Japan International Cooperation Agency (JICA) for supporting his PhD study at Toyohashi University of Technology.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Atsunori Matsuda.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Prastomo, N., Kimata, K., Daiko, Y. et al. Effect of external fields applied during hot-water treatment on the aspect ratio of nanocrystallites formed on SiO2·TiO2 coatings derived from sol–gel techniques. J Sol-Gel Sci Technol 56, 345–352 (2010). https://doi.org/10.1007/s10971-010-2312-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10971-010-2312-8

Keywords

  • Sol–gel coating
  • External field
  • Hot-water treatment
  • Titania nanosheet