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Fabrication of superhydrophobic TiO2 thin films by wet process

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2009, 19(5), pp.262-267
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

Jinho Kim 1 Tae-Young Lim 1 Duckkyun Choi 2 Sae Hoon Kim 3 황종희 1 정현호 1 정덕수 4

1한국세라믹기술원
2한양대학교
3강릉원주대학교
4단국대학교

Accredited

ABSTRACT

Superhydrophobic TiO2 thin films were successfully fabricated on a glass substrate by wet process. Layer-bylayer (LBL) deposition and liquid phase deposition (LPD) methods were used to fabricate the thin films of micro-nano complex structure with a high roughness. To fabricate superhydrophobic TiO2 thin films, the (PAH/PAA) thin films were assembled on a glass substrate by LBL method and then TiO2 nanoparticles were deposited on the surface of (PAH/PAA) thin film by LPD method. Subsequently, hydrophobic treatment using fluoroalkyltrimethoxysilane (FAS) was carried out on the surface of prepared TiO2 thin films. The TiO2 thin film fabricated with 45 minutes immersion time on (PAH/PAA)10 showed the RMS roughness of 65.6 nm, water contact angel of 155 o and high transmittance of above 80 % (> 650 nm in wavelength) after the hydrophobic treatment. The Surface morphologies, optical properties and contact angel of prepared thin films with different experimental conditions were measured by field emission scanning electron microscope (FE-SEM), atomic force microscope (AFM), UV-Vis spectrophotometer and contact angle meter.

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