Fabrication and Characterization for Innate Super-Hydrophilic SiO₂ Thin Films

Abstract:

Distinguished with photoinduced super-hydrophilic inorganic thin films, non-photoinduced innate super-hydrophilic SiO₂ thin films were successfully fabricated in this work. The SiO₂ sol was prepared by acid-base two-step sol-gel method. The mix solution containing SiO₂ sol and polyethylene glycol (PEG) was coated on glass substrate and then went through thermal treatment to obtain innate super-hydrophilic SiO₂ thin films. The films were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and contact angle meter. The results show that the surface concave-convex microstructure and the hydroxyl content are the factors that endow the SiO₂ coating films with innate super-hydrophilic property.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 377-381
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.377
• Online since: January 2013
• Authors: Kai Bo Shen, Huan Yang, Jian Liu, Wei Wang, Yue Huang, Zhong Hua Zhou, Shirley Shen
• Keywords: Innate Hydrophilicity, SiO₂/PEG, Sol-Gel Method

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