期刊
APPLIED SURFACE SCIENCE
卷 542, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2020.148534
关键词
Self-cleaning; Transparent superhydrophobic surface; Silicone grease; Thermal-oxidation
类别
资金
- Natural Science Foundation of Jiangsu Province [BK20191039]
- Program for International S&T Cooperation Projects of Changzhou City [CZ20190020]
- Program for Key Laboratory of High-Tech Research of Changzhou City [CM20193004]
- Qing Lan Project of Jiangsu Province
A self-cleaning, transparent superhydrophobic silica-based surface was fabricated by one-step thermal oxidation of silicone grease, showing excellent stability and light transparency, which can be used for engineering applications in self-cleaning glasses.
A self-cleaning, transparent superhydrophobic silica-based surface with water contact angle (CA)/sliding angle (SA) 168 degrees/2 degrees was fabricated by simple one-step thermal oxidation of silicone grease. Microstructural studies (FESEM/TEM) confirmed the presence of a sponge-like pore structure of amorphous silica nanoparticle having a diameter of around 20 +/- 2.2 nm. EDS analysis confirms the presence of C, Si, and O in coated substrates. Also, phase and thermal studies (XRD, FTIR, and TG-DSC) analysis showed the thermo-oxidative decomposition of silicone grease results in superhydrophobic -H2C-Si-O-Si-CH2 network structure at 400 degrees C followed by thermally stable superhydrophilic HO-Si-O-Si-OH network structure at 500 degrees C. The coated surface showed excellent stability towards corrosive liquids (1 M NaCl, NaOH, HCl aqueous solution, and hot water) and exposed temperature up to 400 degrees C. The maximum visible light transparency of the superhydmphobic glass was 92.4% compared to the uncoated glass (93.3%). Thus, making transparent superhydrophobic surfaces by a simple and straightforward process can be potentially used in self-cleaning glasses for various engineering applications.
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