Cracked Metal–Phenolic Networks with Durable Confinement Capillarity for Enhanced Solar Desalination

Abstract

Solar-driven interfacial desalination is a promising strategy to address freshwater shortages. Water evaporation can be enhanced through confinement capillarity by generating ultra-thin water layers on the internal surfaces of porous photothermal materials. However, realizing confinement capillarity relies on coatings composed of aggregated nanospheres, which likely detach under mechanical compression, limiting their practical application. Herein, nature-inspired crack patterns are introduced into adhesive photothermal supramolecular materials, metal–phenolic network coatings, forming C-MPNs to achieve durable confinement capillarity. The crack patterns can be controlled to optimize water tr..