Efficient and Facile Method of Preparing Superamphiphobic Surfaces on Cu Substrates

Abstract

Nowadays, scalable manufacturing of superamphiphobic surfaces by a simple and efficient method remains challenging. Herein, we developed a facile and efficient strategy for constructing superamphiphobic surfaces on Cu substrates, including press molding, oxidation, and fluorination modification. The prepared superamphiphobic surface not only has repellency and low viscosity to water, ethylene glycol, and 30% ethanol (surface tension: 33.53 mN• m −1 ) but can also achieve excellent self-cleaning properties through these liquids. Scanning electron microscopy images revealed that this superamphiphobic surface had multiple hybrid structures, including microflowers, nanoneedles, and micropillar arrays. Owing to the high chemical stability of the C−F group, the obtained surface also exhibited excellent corrosion resistance. The preparation method of superamphiphobic surfaces with all these advantages does not require complicated equipment and has great advantages in terms of low cost and high efficiency, which not only endows this method with broad application prospects but is also makes it suitable for industrial scalable production.

Material selection and performance optimization strategies for a wearable friction nanogenerator (W-TENG)

“…The main reason is that when copper is fluorinated, fluorine ions react with copper to form copper fluoride (CuF 2 ) or fluoride films. 121 This fluoride film covers the copper surface and reduces the copper's contact with the external environment, which is important for protecting the friction layer.…”

“…The main reason is that when copper is uorinated, uorine ions react with copper to form copper uoride (CuF 2 ) or uoride lms. 121 This uoride lm covers the copper surface and reduces the copper's contact with the external environment, which is important for protecting the friction layer. Yao et al, 122 learned from the electrostatic preorganization effect of natural enzymes 123 and designed a self-actuated stimulus-therapeutic catalytic system for tumor therapy (FT-TENG), as shown in Fig.…”

Adjustable oil adhesion on superamphiphobic copper surfaces for controlled oil droplet transport

“…Later, in 2018, Wen et al 1 utilized a three-step solution immersion method to obtain SAP copper surfaces featuring CuO/Ag reentrant micro/nano structures. More recently, in 2021, Zhu et al 32 achieved superamphiphobic sheets with CuO micron flowers and nano pins through molding, oxidation and fluoride modifications. Although the fabrication of SAP copper surfaces on a large scale has been facilitated, the reproduction of the desired superamphiphobicity, due to the relatively random nature of the produced reentrant structures, may necessitate multiple attempts in practical implementation.…”

Robust Superamphiphobic Coating Applied to Grease-Proof Mining Transformer Components

“…Surfaces with superamphiphobic properties, which can repel both water and organic liquid droplets, are more desirable in industrial fields − and are further widely applied in a number of fields including oil spill resistance, − chemical shielding, − and antifouling, − which will find more actual applications in protecting transformer components during the use and storage process. Xu et al prepared a 1060 aluminum alloy mesh with superamphiphobicity by the chemical deposition method, only relying on AgNO 3 solution, and the fabricated samples could display excellent corrosion resistance and self-cleaning properties .…”