Superhydrophobic TiO2 coatings formed through a non-fluorinated wet chemistry route

被引：22
作者：
Holtzinger, C. [1 ,2 ]
Niparte, B. [1 ]
Waechter, S. [1 ]
Berthome, G. [2 ]
Riassetto, D. [1 ]
Langlet, M. [1 ]
机构：
[1] Grenoble Inst Technol, LMGP, Minatec, F-38016 Grenoble 1, France
[2] Grenoble Inst Technol, SIMaP, F-38402 St Martin Dheres, France
来源：
SURFACE SCIENCE | 2013年 / 617卷
关键词：
Superhydrophobic coatings; Sol-gel process; Nanosphere lithography; Nonfluorinated hydrophobization; FILMS; TRANSPARENT; WETTABILITY; SURFACES; FABRICATION; MORPHOLOGY; MASKS; SIO2;
D O I：
10.1016/j.susc.2013.07.002
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present a facile and low cost non-fluorinated wet chemistry route yielding rough and highly hydrophobic surfaces. This procedure is based on a nanosphere lithography (NSL) method using polystyrene (PS) spheres. Multilayer PS coatings were impregnated with a sol-gel TiO2 polymeric sol and then heat-treated at 500 degrees C. Derived NSL-structured TiO2 coatings were then grafted with hexadecyl trimethoxysilane (C16). The morphology of structured coatings was analyzed by optical, scanning electron, and atomic force microscopy, and the water wettability of TiO2 coating grafted with the C16 precursor was studied with respect to NSL features. It is shown that the synergy between the hydrophobicity imparted by the C16 precursor and roughness effects arising from NSL structuration leads to superhydrophobic coatings. In optimized conditions, the static contact angle of 11.6 mu L water droplets deposited on the surface is around 160 degrees with a corresponding tilt angle as low as 1 degrees. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：141 / 148
页数：8
相关论文
共 39 条
[21]   Enhanced persistence of natural super-hydrophilicity in TiO2-SiO2 composite thin films deposited via a sol-gel route [J].
Houmard, M. ;
Riassetto, D. ;
Roussel, F. ;
Bourgeois, A. ;
Berthome, G. ;
Joud, J. C. ;
Langlet, M. .
SURFACE SCIENCE, 2008, 602 (21) :3364-3374
[22]   Highly Transparent Superhydrophobic Surfaces from the Coassembly of Nanoparticles (≤ 100 nm) [J].
Karunakaran, Raghuraman G. ;
Lu, Cheng-Hsin ;
Zhang, Zanhe ;
Yang, Shu .
LANGMUIR, 2011, 27 (08) :4594-4602
[23]   Superhydrophobic states [J].
Lafuma, A ;
Quéré, D .
NATURE MATERIALS, 2003, 2 (07) :457-460
[24]   Transparent superhydrophobic/superhydrophilic TiO2-based coatings for self-cleaning and anti-fogging [J].
Lai, Yuekun ;
Tang, Yuxin ;
Gong, Jiaojiao ;
Gong, Dangguo ;
Chi, Lifeng ;
Lin, Changjian ;
Chen, Zhong .
JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (15) :7420-7426
[25]   Photocatalytic activity and photo-induced superhydrophilicity of sol-gel derived TiO2 films [J].
Langlet, A. ;
Permpoon, S. ;
Riassetto, D. ;
Berthome, G. ;
Pernot, E. ;
Joud, J. C. .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2006, 181 (2-3) :203-214
[26]   Low temperature preparation of high refractive index and mechanically resistant sol-gel TiO2 films for multilayer antireflective coating applications [J].
Langlet, M ;
Burgos, M ;
Coutier, C ;
Jimenez, C ;
Morant, C ;
Manso, M .
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2001, 22 (1-2) :139-150
[27]   Modified silica sol coatings for water-repellent textiles [J].
Mahltig, B ;
Böttcher, H .
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2003, 27 (01) :43-52
[28]   Hydrophobic functionalization of cotton-based textile fabrics through a non-fluorinated sol-gel route [J].
Messaoud, M. ;
Houmard, M. ;
Briche, S. ;
Roussel, F. ;
Langlet, M. .
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2010, 55 (02) :243-254
[29]   Superhydrophobic films from raspberry-like particles [J].
Ming, W ;
Wu, D ;
van Benthem, R ;
de With, G .
NANO LETTERS, 2005, 5 (11) :2298-2301
[30]   Roselike microstructures formed by direct in situ hydrothermal synthesis: From superhydrophilicity to superhydrophobicity [J].
Shi, F ;
Chen, XX ;
Wang, LY ;
Niu, J ;
Yu, JH ;
Wang, ZQ ;
Zhang, X .
CHEMISTRY OF MATERIALS, 2005, 17 (24) :6177-6180
1234