Morphology and natural wettability properties of sol-gel derived TiO2-SiO2 composite thin films

被引：102
|
作者：
Houmard, M. [1 ,2 ]
Riassetto, D. [2 ]
Roussel, F. [3 ]
Bourgeois, A.
Berthome, G. [1 ]
Joud, J. C. [1 ]
Langlet, M. [2 ]
机构：
[1] Inst Natl Polytech Grenoble, LTPCM, F-38402 St Martin Dheres, France
[2] Inst Natl Polytech Grenoble, LMGP, F-38402 St Martin Dheres, France
[3] Inst Natl Polytech Grenoble, CMTC, St Martin Dheres, France
来源：
APPLIED SURFACE SCIENCE | 2007年 / 254卷 / 05期
关键词：
super-hydrophilicity; TiO2-SiO2 thin films; sol-gel; self-cleaning surfaces;
D O I：
10.1016/j.apsusc.2007.06.072
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：
Previous studies suggest that granular interfaces induce a natural and persistent super-hydrophilicity in TiO2-SiO2 composite thin films deposited by sol-gel route. This effect enables to consider self-cleaning applications that do not require a permanent UV exposure, whereas such a permanent exposure is necessary for pure TiO2 films. In this study, TiO2-SiO2 composite thin films have been deposited from a TiO2 anatase crystalline suspension and different SiO2 Polymeric sols. Wettability studies show that a suitable control of the TiO2-SiO2 mixed sol formulations noticeably enhances persistence of the natural super-hydrophilicity in composite films. It is shown that, beside granular interface effects, modifications in the composite film morphologies can noticeably influence wettability properties. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1405 / 1414
页数：10
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