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Highly Efficient Photothermal Icephobic/de-Icing MOF-Based Micro and Nanostructured Surface
作者:Lei Zhang, B. Luo, K. Fu, C. Gao, X. Han, M. Zhou, T. Zhang, L. Zhong, Y. Hou, Yongmei Zheng
關鍵字:Anti-icing
論文來源:期刊
發表時間:2023年

Photothermal materials have gained considerable attention in the field of

anti-/de-icing due to its environmental friendliness and energy saving.

However, it is always significantly challenging to obtain solar thermal

materials with hierarchical structure and simultaneously demonstrate both

the ultra-long icing delay ability and the superior photothermal de-icing ability.

Here, a photothermal icephobic MOF-based micro and nanostructure surface

(MOF-MNS) is presented, which consists of micron groove structure and

fluorinated MOF nanowhiskers. The optimal MOF-M250NS can achieve solar

absorption of over 98% and produce a high temperature increment of 65.5 °C

under 1-sun illumination. Such superior photothermal-conversion mechanism

of MOF-M250NS is elucidated in depth. In addition, the MOF-M250NS

generates an ultra-long icing delay time of ≈3960 s at -18 °C without solar

illumination, achieving the longest delay time, which isn’t reported before.

Due to its excellent solar-to-heat conversation ability, accumulated ice and

frost on MOF-M250NS can be rapidly melted within 720 s under 1-sun

illumination and it also holds a high de-icing rate of 5.8 kg m-2 h-1.

MOF-M250NS possesses the versatility of mechanical robustness, chemical

stability, and low temperature self-cleaning, which can synergistically

reinforce the usage of icephobic surfaces in harsh conditions.


https://doi.org/10.1002/advs.202304187 

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