具有层次结构的多功能类黑色素涂层可用于个人热管理、防冰/除冰和紫外线防护,ACS Applied Materials & Interfaces

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具有层次结构的多功能类黑色素涂层可用于个人热管理、防冰/除冰和紫外线防护
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-01-04 , DOI: 10.1021/acsami.2c20714
Zhiheng Zhao ₁ , Qi Zhang ₁ , Xudong Song ₁ , Jing Chen ₁ , Yitong Ding ₁ , Hong Wu ₁ , Shaoyun Guo ₁

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由于太阳能的有效利用，超疏水光热涂层有望用于多功能应用，但当前的挑战是寻找一种易于制备且具有高光热性能的材料。在此，受贻贝粘附和荷叶表面的启发，我们通过依次沉积类黑色素聚多巴胺 (PDA) 和浸涂聚二甲基硅氧烷 (PDMS)/疏水气相二氧化硅 (SiO ₂ )，开发了具有分级结构的超疏水光热涂层。^{得益于 PDA 高效的光热转换性能，涂层织物可以在 100 mW/cm 2}下快速升温至 100 °C太阳照射。同时，涂层表现出优异的超疏水性能（WCA为163°），不仅可以防止污染物的附着，保持长期高效的光热性能，还有助于织物具有出色的被动防冰和主动除冰性能. 此外，涂层的超疏水性能可以在砂纸磨损、重复胶带剥离和超声处理后保持。此外，涂层优异的紫外线防护性能可满足室外阳光下的长期使用条件。基于 PDA 的超疏水光热涂层被认为可以激发太阳能驱动多功能应用的新策略，例如个人热管理、各种形状部件的防冰/除冰、光热抗菌等。

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Versatile Melanin-Like Coatings with Hierarchical Structure toward Personal Thermal Management, Anti-Icing/Deicing, and UV Protection

Superhydrophobic photothermal coatings are promising for multifunctional applications due to the efficient use of solar energy, but the current challenge is to seek one easy-to-prepare material with high photothermal performance. Herein, inspired by mussel adhesion and lotus leaf surfaces, we developed superhydrophobic photothermal coatings with hierarchical structure by depositing melanin-like polydopamine (PDA) and dip-coating polydimethylsiloxane (PDMS)/hydrophobic fumed silica (SiO₂) sequentially. Benefitting from the efficient photothermal conversion performance of PDA, the coated fabric can rapidly warm up to 100 °C under 100 mW/cm² sun irradiation. Meanwhile, the coatings show excellent superhydrophobic properties (WCA of 163°), which not only prevent the adhesion of the contaminant from maintaining a long-term and efficient photothermal performance but also help the fabric to own outstanding passive anti-icing and active deicing performances. Furthermore, the superhydrophobic properties of the coatings can be maintained after sandpaper abrasion, repeat tape-peeling, and ultrasonication. In addition, superior UV protection of the coatings can meet the long-term service conditions under outdoor sunlight. The PDA-based superhydrophobic photothermal coatings are believed to inspire new strategies for solar-driven multifunctional applications such as personal thermal management, anti-icing/deicing of variously shaped components, photothermal antibacterial, and so on.

更新日期：2023-01-04

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