Article history: The fabrication of superhydrophobic coatings using a candle ﬂame or rapeseed oil has become very Received 6 October 2015 attractive as a novel approach for synthesis of water repellent surfaces. Here, we report an improved, Received in revised form 2 February 2016 simpliﬁed and time-efﬁcient method for the preparation of robust superhydrophobic carbon soot that Accepted 7 February 2016 does not require any additional stabilizers or chemical treatment. The soot’s inherent stabilization is Available online 9 February 2016 achieved using a specially-designed cone-shaped aluminum chimney, mounted over an ignited paper- based wick immersed in a rapeseed oil. Such conﬁguration decreases the level of oxygen during the Keywords: process of combustion; altering the ratio of chemical bonds in the soot. As a result, the fractal-like net- Superhydrophobicity work of the carbon nanoparticles is converted into dense and fused carbon chains, rigidly coupled to Carbon soot the substrate surface. The modiﬁed carbon coating shows thermal sustainability and retains superhy- Rapeseed oil ◦ ◦ drophobicity up to ∼300 C. Furthermore, it demonstrates a low contact angle hysteresis of 0.7–1.2 Cone-shaped chimney accompanied by enhanced surface adhesion and mechanical durability under random water ﬂows. In addition, the soot’s deposition rate of
Applied Surface Science – Elsevier
Published: Apr 30, 2016
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