Robust Superamphiphobic Film from Electrospun TiO2 Nanostructures

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• 作者：V. Anand Ganesh ; Saman Safari Dinachali ; A. Sreekumaran Nair ; Seeram Ramakrishna
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2013
• 出版时间：March 13, 2013
• 年：2013
• 卷：5
• 期：5
• 页码：1527-1532
• 全文大小：342K
• 年卷期：v.5,no.5(March 13, 2013)
• ISSN：1944-8252

文摘

Rice-shaped TiO₂ nanostructures are fabricated by electrospinning for creating a robust superamphiphobic coating on glass substrates. The as-fabricated TiO₂ nanostructures (sintered at 500 掳C) are superhydrophilic in nature which upon silanization turn into superamphiphobic surface with surface contact angle (SCA) values achieved using water (surface tension, 纬 = 72.1 mN/m) and hexadecane (surface tension, 纬 = 27.5 mN/m) being 166掳 and 138.5掳, respectively. The contact angle hysteresis for the droplet of water and hexadecane are measured to be 2 and 12掳, respectively. Thus, we have successfully fabricated superior self-cleaning coatings that possess exceptional superamphiphobic property by employing a simple, cost-effective, and scalable technique called electrospinning. Furthermore, the coating showed good mechanical and thermal stability with strong adherence to glass surface, thus revealing the potential for real applications.

Keywords:

superamphiphobicity; electrospinning; rice-shaped TiO₂; surface contact angle; contact angle hysteresis and self-cleaning