Hybrid assembly of nanosol titania and dodecylamine for superhydrophobic self-cleaning glass

Kartini, Indriana, Santosa, Sri Juari, Febriyanti, Ema, Nugroho, Oky Ragil, Yu, Hua and Wang, Lianzhou (2014) Hybrid assembly of nanosol titania and dodecylamine for superhydrophobic self-cleaning glass. Journal of Nanoparticle Research, 16 7: . doi:10.1007/s11051-014-2514-z

Author Kartini, Indriana
Santosa, Sri Juari
Febriyanti, Ema
Nugroho, Oky Ragil
Yu, Hua
Wang, Lianzhou
Title Hybrid assembly of nanosol titania and dodecylamine for superhydrophobic self-cleaning glass
Journal name Journal of Nanoparticle Research   Check publisher's open access policy
ISSN 1388-0764
Publication date 2014
Year available 2014
Sub-type Article (original research)
DOI 10.1007/s11051-014-2514-z
Open Access Status
Volume 16
Issue 7
Total pages 14
Place of publication Dordrecht, The Netherlands
Publisher Springer
Collection year 2015
Language eng
Abstract This study presents the formation of superhydrophobic films on glass surface resulted from hybrid assembly of inorganic-organic layers based on sol-gel-derived titania (TiO2)/dodecylamine (DDA). One-step and layer-by-layer (LbL) dip-coating approaches are compared and discussed as well as the effect of film annealing rates on the resulting hydrophobicity of glass surfaces. The hydrophobicity was obtained by measuring the water contact angle (WCA) of the films. It is shown that slow annealing rate combined with LbL sol-gel dip-coating produced robust coating with reasonable transparency. The effect of multiple coating and C to Ti mole ratios to the surface hydrophobicity of the resulted films is also reported. As a result, film transparency decreased with increasing coating times. Meanwhile, the C/Ti mole ratios predominantly affect WCA at higher coating numbers. Superhydrophobicity of WCA as high as 155.5° was observed for translucent hybrid film after three-time coating at C/Ti mole ratio of 7. The AFM image confirmed the surface roughness of 78 nm supported with homogeneous interconnected hybrid clusters of TiO 2-DDA over the film surface as shown by the corresponding SEM images. Microhardness tester employing Vickers hardness number (VHN) was used to access the mechanical adhesion of the hybrid films by representing the film retention to scratching. It is observed that VHN increased as the C/Ti mole ratio increased with optimum condition achieving at C/Ti mole ratio of 5 (VHN of 60 kgf/mm2). All films have demonstrated good retention of hydrophobicity for 4 weeks outdoor at high-humidity (RH > 90 %) exposure. This work is expected to pave a way to the creation of transparent superhydrophobic films based on environmentally benign TiO2 inorganic-organic hybrid materials.
Keyword Hybrid film
Self-cleaning glass
Sol-gel method
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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