Highly Efficient Photothermal Icephobic/de‐Icing MOF‐Based Micro and Nanostructured Surface

Abstract

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.

Study on the Dependence between Surface Topography and Icephobic Behavior of Ni–Cu–P Ternary Coatings

“…An undesirable icing phenomenon has become a serious issue in various industries and daily lives, such as disturbing the aviation industry, downing the power cables, freezing the roads, and perturbing the operation of wind turbine blades, and could even lead to catastrophic failures. [ 1,2 ] Therefore, it is worthwhile to develop corresponding ice protection systems. Icephobic surfaces with anti‐icing performance, low ice adhesion, and outstanding mechanical durability could be one of the promising solutions.…”

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti3C2Tx Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

“…Solar energy, being a sustainable source, provides a new avenue for deicing by converting solar energy into heat using photothermal materials. By combining the photothermal effect with the characteristics of superhydrophobic surfaces, simultaneous anti-icing and deicing effects can be achieved. , Jiang et al utilized a simple spray-coating method to fabricate a superhydrophobic SiC/CNT coating with photothermal deicing and passive anti-icing properties. Under near-infrared region (NIR) (808 nm) irradiation, the surface temperature of the coating increased from 30 to 120 °C within 10 s, melting the ice on the surface through heat transfer.…”

Empowering Photovoltaic Panel Anti-Icing: Superhydrophobic Organic Composite Coating with In Situ Photothermal and Transparency

“…This accumulation severely impedes the effective operation of the photovoltaic panels. − Traditional deicing or anti-icing/frosting methods, such as mechanical deicing, electric heating, and chemical sprays, consume a lot of time and energy as well as pollute the environment. − The use of photothermal materials for solar anti-icing and deicing is a cost-effective and environmentally friendly solution to address the icing problem on photovoltaic panels. This technology harnesses the power of sunshine to generate heat, effectively preventing ice and frost accumulation and melting existing ice and frost. − However, the inherent necessity of photothermal materials with high light absorption characteristics often results in their predominantly opaque and black appearance. − This is a crucial problem in situations where transparency is essential, such as surface photothermal coatings used in photovoltaic panels for anti-icing, antifrosting, and deicing applications.…”