Abstract
In recent years, interfacial solar steam generation (ISSG) has attracted considerable interest as a means of producing fresh water from various water sources. And photothermal materials play a crucial role in the ISSG system, significantly impacting the efficiency of water evaporation. Among the numerous photothermal materials for ISSG, natural photothermal materials have attracted extensive attention due to their eco-friendliness, renewability, and cost-effectiveness. These materials possess the essential attributes required for efficient solar interfacial evaporators, including hygroscopicity, solar absorption, and thermal conversion, making them well-suited for the large-scale development of high-performance interfacial evaporators. This review summarizes recent advances in the application of natural materials in the ISSG system, lists strategies to enhance the photothermal properties of natural materials, analyzes the design advantages and functionalities of natural materials in thermal management and water transport (major influencing factors of ISSG system's evaporation efficiency), and aims to provide references for research on natural materials in the field of ISSG system.
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