蒸发
蒸发器
材料科学
卤水
水蒸气
碳化
化学工程
太阳能
生物量(生态学)
环境科学
化学
复合材料
气象学
热力学
热交换器
有机化学
扫描电子显微镜
生态学
物理
海洋学
生物
工程类
地质学
作者
Wei Wang,Zhimei Tian,Huan Xi,Yining Li,Ping Hu
标识
DOI:10.1002/ente.202300671
摘要
Solar vapor generation has been considered an appealing way to solve freshwater scarcity issues. Although several natural materials have been developed, the exploration of biomass materials with stable evaporation, simple processes, and low energy consumption is still necessary. Herein, sweet potato, a high‐yield natural plant, is explored to prepare a solar evaporator with a cross‐linked porous structure. Carbonized sweet potato exhibits a high evaporation rate of 1.7 kg m −2 h −1 and an excellent solar–thermal conversion efficiency of 76% under 1 sun. This demonstrates excellent photothermal ability and enhanced water evaporation performance. Thanks to the unobstructed cross‐linking structure and fast water transport, the salt does not accumulate on the evaporator's surface in high‐salinity brine (10–20 wt% NaCl) and the evaporation rate is 1.35 kg m −2 h −1 . This suggests superior evaporative stability and self‐desalting capability. The purpose of this study is to provide an eco‐friendly, stable, and efficient evaporator, with salt resistance by simple processes, and to demonstrate the potential application of biomass materials in solar vapor generation.
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