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