Skip to main content
Log in

Thickness effects in naturally superhydrophilic TiO2–SiO2 nanocomposite films deposited via a multilayer sol–gel route

  • Published:
Journal of Sol-Gel Science and Technology Aims and scope Submit manuscript

Abstract

TiO2–SiO2 nanocomposite films of various thicknesses have been deposited via a multilayer sol–gel route. These films exhibit a natural and persistent superhydrophilicity, which allows considering new applications for easy to clean surfaces. Atomic force microscopy, scanning and transmission electron microscopy, as well as ellipsometry and UV/visible spectrometry measurements, were performed to study how the multilayer procedure influenced the morphology and composition of composite films in relation to their thickness. The natural and photo-induced wettability of these films was studied and discussed in relation to morphology, composition, and thickness features. It is concluded that, while such features did not significantly influence the natural wettability of nanocomposite films, their photo-induced wettability was considerably enhanced when increasing their thickness, which favored a faster superhydrophilicity photo-regeneration when this natural property started to disappear after a long aging period in ambient atmosphere.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

References

  1. Permpoon S, Berthomé G, Baroux B, Joud JC, Langlet M (2006) Natural superhydrophilicity of sol–gel derived SiO2–TiO2 composite films. J Mater Sci 41:7650–7662

    Article  CAS  Google Scholar 

  2. Houmard M, Riassetto D, Roussel F, Bourgeois A, Berthomé G, Joud JC, Langlet M (2007) Morphology and natural wettability properties of sol-gel derived TiO2–SiO2 composite thin films. Appl Surf Sci 254:1405–1414

    Article  CAS  Google Scholar 

  3. Houmard M, Riassetto D, Roussel F, Bourgeois A, Berthomé G, Joud JC, Langlet M (2008) Enhanced persistence of natural super-hydrophilicity in TiO2–SiO2 composite thin films deposited via a sol-gel route. Surf Sci 602:3364–3374

    Article  CAS  Google Scholar 

  4. Houmard M, Berthome G, Joud JC, Langlet M (2011) Enhanced cleanability of super-hydrophilic TiO2–SiO2 composite surfaces prepared via a sol-gel route. Surf Sci 605:456–462

    Article  CAS  Google Scholar 

  5. Holtzinger C, Rapenne L, Chaudouët P, Berthomé G, Joud JC, Langlet M (2012) Influence of sol composition on natural superhydrophilicity of sol-gel derived TiO2–SiO2 nanocomposite thin films. Emerg Mater Res 1:127–135

    Article  CAS  Google Scholar 

  6. Carp O, Huisman CL, Reller A (2004) Photoinduced reactivity of titanium dioxide. Prog Solid State Chem 32:33–177

    Article  CAS  Google Scholar 

  7. Ingemar Odenbrand CU, Lars S, Andersson T, Andersson LAH, Brandin JGM, Busca G (1990) Characterization of silica-titania mixed oxides. J Catal 125:541–553

    Article  Google Scholar 

  8. Wang R, Sakai N, Fujishima A, Watanabe T, Hashimoto K (1999) Studies of surface wettability conversion on TiO2 single-crystal surfaces. J Phys Chem B 103:2188–2194

    Article  CAS  Google Scholar 

  9. Sakai N, Fujishima A, Watanabe T, Hashimoto K (2001) Enhancement of the photoinduced hydrophilic conversion rate of TiO2 film electrode surfaces by anodic polarization. J Phys Chem B 105:3023–3026

    Article  CAS  Google Scholar 

  10. Itoh M, Hattori H, Tanabe K (1974) The acidic properties of TiO2–SiO2 and its catalytic activities for the amination of phenol, the hydration of ethylene and the isomerization of butene. J Catal 35:225–231

    Article  CAS  Google Scholar 

  11. Tanabe K, Sumiyoshi T, Shibata K, Kiyoura T, Kitagawa J (1974) A new hypothesis regarding the surface acidity of binary metal oxides. Bull Chem Soc Jap 47:1064–1066

    Article  CAS  Google Scholar 

  12. Kataoka T, Dumesic JA (1988) Acidity of unsupported and silica-supported vanadia, molybdena, and titania as studied by pyridine adsorption. J Catal 112:66–79

    Article  CAS  Google Scholar 

  13. Sohn JR, Jang HJ (1991) Correlation between the infrared band frequency of the silanol bending vibration in TiO2–SiO2 catalysts and activity for acid catalysis. J Catal 132:563–565

    Article  CAS  Google Scholar 

  14. Liu ZF, Tabora J, Davis RJ (1994) Relationships between microstructure and surface acidity of Ti–Si mixed oxide catalysts. J Catal 149:117–126

    Article  CAS  Google Scholar 

  15. Gao X, Wachs IE (1999) Titania-silica as catalysts: molecular structural characteristics and physico-chemical properties. Catal Today 51:233–254

    Article  CAS  Google Scholar 

  16. Contescu CI, Schwarz JA (2000) Acid-Base interactions on surfaces of wet and dry inorganic oxides. In: Mittal KL (ed) Acid-Base interactions : relevance to adhesion Sience and technology, vol 2. VSP BV, Zeist, pp 245–274

    Google Scholar 

  17. De Gennes PG, Brochard-Wyart F, Quéré D (2002) Gouttes, bulles, perles et ondes. Belin, Paris

    Google Scholar 

  18. Wenzel RN (1936) Resistance of solid surfaces to wetting by water. Ind Eng Chem 28:988–994

    Article  CAS  Google Scholar 

  19. Bico J et al (2001) Rough wetting. EPL (Europhysics Letters) 55:214

    Article  CAS  Google Scholar 

  20. Langlet M, Burgos M, Coutier C, Jimenez C, Morant C, Manso M (2001) Low temperature preparation of high refractive index and mechanically resistant sol-gel TiO2 films for multilayer antireflective coating applications. J Sol Gel Sci Technol 22:139–150

    Article  CAS  Google Scholar 

  21. Langlet M, Kim A, Audier M, Guillard C, Herrmann JM (2003) Liquid phase processing and thin film deposition of titania nanocrystallites for photocatalytic applications on thermally sensitive substrates. J Mater Sci 38:3945–3953

    Article  CAS  Google Scholar 

  22. Weast RC, Shelby SM (1967) Handbook of chemistry and physics, 48th edn. The Chemical Rubber Co., Cleaveland

    Google Scholar 

  23. Langlet M, Permpoon S, Riassetto D, Berthomé G, Pernot E, Joud JC (2006) Photocatalytic activity and photo-induced superhydrophilicity of sol-gel derived TiO2 films. J Photochem Photobiol A Chem 181:203–214

    Article  CAS  Google Scholar 

  24. Busscher HJ, van Pelt AWJ, de Boer P, de Jong HP, Arends J (1984) The effect of surface roughening of polymers on measured contact angles of liquids. Colloids Surf 9:319–331

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to C. Holtzinger.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Holtzinger, C., Rapenne, L., Chaudouët, P. et al. Thickness effects in naturally superhydrophilic TiO2–SiO2 nanocomposite films deposited via a multilayer sol–gel route. J Sol-Gel Sci Technol 64, 465–479 (2012). https://doi.org/10.1007/s10971-012-2878-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10971-012-2878-4

Keywords

Navigation