Fabrication of superhydrophobic surface with desirable anti-icing performance based on micro/nano-structures and organosilane groups

Qi, Yanli; Yang, Zhangbin; Chen, Tingting; Xi, Yunfei; Zhang, Jun

doi:10.1016/j.apsusc.2019.144165

Cited by 64 publications

(29 citation statements)

References 37 publications

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“…Although the water droplets condensed on the surface do not have the same initial kinetic energy as the water droplets impinged on it, as an SHS, there is a large amount of air trapped between the micro and nano surface structures. When the condensate is formed on the SHS, the small radius of the synaptic tip makes the droplet have a larger CA with the surface and a smaller CAH, so that the contact area between the droplet and the surface is minimized ( Ensikat et al., 2011 ; Qi et al., 2020b ). The interaction between water droplets and the surface is weak, and the water droplets remain spherical ( Vandadi et al., 2019 ).…”

Section: Removing Surface Water Droplets Before Freezingmentioning

confidence: 99%

Superhydrophobic materials used for anti-icing Theory, application, and development

Guo

2021

iScience

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Summary The accumulation of ice will reduce the performance of the base material and lead to all kinds of damage, even a threat to people's life safety. Recent increasing studies suggest that superhydrophobic surfaces (SHSs) originating from nature can remove impacting and condensing droplets from the surface before freezing to subzero temperatures, and it can be seen that hydrophobic/SH coating has good freezing cold resistance. But such anti-icing performances and developments in practical applications are restricted by various factors. In this paper, the mechanism and process of surface icing phenomenon are introduced, as well as how to prevent surface icing on SHS. The development of SH materials in the aspect of anti-icing in recent years is described, and the existing problems in the aspect of anti-icing are analyzed, hoping to provide new research ideas and methods for the research of anti-icing materials.

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Section: Removing Surface Water Droplets Before Freezingmentioning

confidence: 99%

Superhydrophobic materials used for anti-icing Theory, application, and development

Guo

2021

iScience

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“…Recently, the development of superhydrophobic surfaces with anti-icing properties has become a popular topic and attracted the attention of many researchers worldwide [6][7][8][9][10]. Because ice presents low adhesivity to superhydrophobic surfaces, it can be easily removed by delaying its formation or using natural forces, such as wind, gravity, and vibration [11].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Fluorinated Polysilazanes and Their Durable Icephobicity on Rough Al Surfaces

Hong

Hwang³

et al. 2022

Polymers

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Superhydrophobic Al surfaces with excellent durability and anti-icing properties were fabricated by coating dual-scale rough Al substrates with fluorinated polysilazane (FPSZ). Flat Al plates were etched using an acidic solution, followed by immersion in boiling water to generate hierarchical micro-nano structures on their surfaces. The FPSZ coatings were synthesized by grafting 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (FAS-17), a fluoroalkyl silane), onto methylpolysilazane, an organopolysilazane (OPSZ) backbone. The high water contact angle (175°) and low sliding angle (1.6°) of the FPSZ-coated sample with an FAS-17 content of 17.3 wt% promoted the efficient removal of a frozen ice column with a low ice adhesion strength of 78 kPa at −20.0 °C (70% relative humidity), which was 4.3 times smaller than that of an OPSZ-coated surface. The FPSZ-coated Al surface suppressed ice nucleation, leading to a decrease in ice nucleation temperature from −19.5 to −21.9 °C and a delay in freezing time from 334 to 4914 s at −19.0 °C compared with the OPSZ-coated Al surface. Moreover, after 40 icing–melting cycles the freezing temperature of a water droplet on the FPSZ-coated Al surface remained unchanged, whereas that on the FAS-17-coated Al surface increased from −22.3 to −20.7 °C. Therefore, the durability of the polymeric FPSZ coating was superior to that of the FAS-17 monolayer coating.

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“…There are several studies on various chemicals used in lowering the surface energy of a substrate, including: organophosphonic acids, steric acids, fatty acids, alkanethiols, and organosilanes. [14][15][16][17][18][19] Organosilanes are the most widely and frequently used chemicals in both research and technology for the alignment of proper surface topology and the lowering of substrate surface energy through the hydrolytic condensation of tetraethylorthoxysilicate (TEOS) and organosilanes. It is preferred due to its simplicity, creation of superhydrophobic-superoleophilic substrate, cost-effectiveness, and lower toxicity.…”

Section: Introductionmentioning

confidence: 99%

“…Silica sol coating is a single step sol–gel technique that provides a cost‐effective and simple approach to improving the hydrophobic property of membranes through the decrease of surface free energy. There are several studies on various chemicals used in lowering the surface energy of a substrate, including: organophosphonic acids, steric acids, fatty acids, alkanethiols, and organosilanes 14–19 . Organosilanes are the most widely and frequently used chemicals in both research and technology for the alignment of proper surface topology and the lowering of substrate surface energy through the hydrolytic condensation of tetraethylorthoxysilicate (TEOS) and organosilanes.…”

Section: Introductionmentioning

confidence: 99%

Impact of organosilanes modified superhydrophobic‐superoleophilic kaolin ceramic membrane on efficiency of oil recovery from produced water

Usman

Othman

Ismail

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: Novel hybrid absorption coupled with membrane filtration technology is proposed for the recovery of oil from produced water. This study aims at developing a low cost superhydrophobic-superoleophilic kaolin-based hollow fiber ceramic membrane using phase inversion and sintering technique for the recovery of oil from synthetic produced water. The influence of different organosialanes, such as methyltriethoxysilane (MTES), octadecyltrimethoxysilane (OTMS), 1H,1H,2H,2Hperfluorooctyltriethoxysilane (FAS), trichloro(octadecyl)silane, and chlorotrimethylsilane, was investigated for the modification process. RESULTS: Field emission scanning electron microscopy results clearly indicated that membrane morphology was altered with coating of the organosilanes. The surface functionality of the organosilanes on kaolin membranes was also confirmed by Xray photoelectron spectroscopy and Fourier-transform infrared spectroscopy. From the atomic force microscopy studies, membrane surface roughness was observed to be higher for MTES, FAS, and OTMS coated kaolin membranes. Contact analysis show that the membranes coated with MTES, FAS and OTMS organosilane agents possessed superhydrophobicity of 161.3°, 155.6°, and 150.2°as well as superoleophilicity of 0°, 1.5°, and 2.3°, respectively. CONCLUSION: Crude oil with a concentration of 2 g L −1 displayed a higher oil flux of 80 L m −2 h −1 and absorption of 90% for MTES coated kaolin membrane. This study extends the frontier of knowledge in ceramic membrane application for produced water treatment.

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Fabrication of superhydrophobic surface with desirable anti-icing performance based on micro/nano-structures and organosilane groups

Cited by 64 publications

References 37 publications

Superhydrophobic materials used for anti-icing Theory, application, and development

Superhydrophobic materials used for anti-icing Theory, application, and development

Facile Synthesis of Fluorinated Polysilazanes and Their Durable Icephobicity on Rough Al Surfaces

Impact of organosilanes modified superhydrophobic‐superoleophilic kaolin ceramic membrane on efficiency of oil recovery from produced water

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