| SUN Wen,CHU Fu-qiang,LI Shu-xin,GAO Jie,FENG Yan-hui.Research Progress on Anti-icing Mechanisms and Applications of Photothermal Superhydrophobic Materials[J],51(12):39-51 |
| Research Progress on Anti-icing Mechanisms and Applications of Photothermal Superhydrophobic Materials |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.12.003 |
| KeyWord:superhydrophobic photothermal conversion anti-icing carbon materials plasmon effect |
| Author | Institution |
| SUN Wen |
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing , China |
| CHU Fu-qiang |
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing , China |
| LI Shu-xin |
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing , China |
| GAO Jie |
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing , China |
| FENG Yan-hui |
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing , China |
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| Abstract: |
| The accumulation of frozen liquid droplets often harms industrial production and our daily life, reducing the effectiveness of equipment operation and even seriously endangering life safety. Compared with active anti-icing technologies that require external energy or forces such as hot gas anti-icing and mechanical anti-icing, the excellent water repellency of superhydrophobic surfaces enables passive anti-icing, which is of great interest to both scientists and engineers. With a large water contact angle and small rolling angle, superhydrophobic surfaces ease self-removal of liquids from the surface through droplet rolling, jumping or bouncing, thereby holding great prospects for anti-icing and deicing. Starting from the basis of superhydrophobicity, photothermal superhydrophobic surfaces combine the advantages of both active and passive anti-icing, and can be used in all periods of the icing process to achieve energy-efficient and effective anti-icing of solid surfaces. This work provided an overview of the wetting characteristics and anti-/de-icing mechanisms of superhydrophobic surfaces, and focused on the photothermal conversion mechanisms of different types of photothermal materials, including carbon nanophotothermal materials based on molecular thermal vibrations, photothermal materials based on nanoparticle surface plasmon resonance effects, and semiconductor photothermal materials based on electron-hole pair non-radiative relaxation. The ideas and methods commonly used by various types of materials to improve the photothermal conversion efficiency were summarized, and the performance of various types of photothermal superhydrophobic surfaces in terms of icing, anti-icing, de-icing and photothermal response was compared. Finally, the possible problems in preparation and practical applications of photothermal superhydrophobic materials were proposed, and the future development directions and challenges were analyzed to provide insights for further development and applications, including (i) qualitative or quantitative relationship between micro- and nanostructure design of photothermal superhydrophobic surfaces and their anti-icing performance, (ii) robustness and failure mechanisms of photothermal superhydrophobic surfaces, and (iii) facile and low-cost fabrication of photothermal superhydrophobic surfaces and their large-scale practical application. |
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