Multifunctional Solar Evaporator with Adjustable Island Structure Improves Performance and Salt Discharge Capacity of Desalination.
Multifunctional Solar Evaporator with Adjustable Island Structure Improves Performance and Salt Discharge Capacity of Desalination.
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多功能可调式岛式太阳能蒸发器提高海水淡化性能和排盐能力。
DOI：
10.1002/advs.202305523
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发表时间：
2023-12
期刊：
影响因子：
15.1
通讯作者：
Cai, Yahui
中科院分区：
文献类型：
--
作者：
Wu, Jianfei;Cui, Ziwei;Yu, Yang;Yue, Bo;Hu, Jundie;Qu, Jiafu;Li, Jianzhang;Tian, Dan;Cai, Yahui
关键词：
界面太阳能蒸汽发生（ISSG）是从海水或废水中获取淡水的主要方法。蒸发速率和抗盐性之间的平衡仍然是ISSG面临的主要挑战。本文中，通过合成聚（N-异丙基丙烯酰胺）改性的多壁碳纳米管光热层，制备了具有可调表面结构和润湿性的木材气凝胶岛太阳能蒸发器（WAISE）。与致密表面结构蒸发器相比，WAISE的界面水分传输、热局部化和表面水蒸气扩散都得到了很大的促进，蒸发速率提高了87.64%。WAISE允许在20%NaCl溶液中连续运行200小时而无盐积累的创纪录性能。此外，基于WAISE开发的光热发电装置具有连续水净化，发电和灌溉功能。本工作为多功能净水系统的发展提供了新的方向。本文通过合成聚（N-异丙基丙烯酰胺）改性的多壁碳纳米管光热材料，制备了表面结构和润湿性可调的木质气凝胶岛太阳能蒸发器（WAISE）。WAISE有效地平衡了蒸发速率与耐盐性之间的矛盾，为木质蒸发器在海水淡化中的应用提供了新的研究思路。
Interfacial solar steam generation (ISSG) is the main method to get fresh water from seawater or wastewater. The balance between evaporation rate and salt resistance is still a major challenge for ISSG. Herein, a wood aerogel island solar evaporator (WAISE) with tunable surface structure and wettability by synthesizing poly(n‐isopropylacrylamide)‐modified multi‐walled carbon nanotube photothermal layers. Compared to dense surface structure evaporators, interfacial moisture transport, thermal localization, and surface water vapor diffusion of WAISE are greatly promoted, and the evaporation rate of WAISE increased by 87.64%. WAISE allows for record performance of 200 h continuous operation in 20% NaCl solution without salt accumulation. In addition, the photo‐thermal‐electric device is developed based on WAISE with continuous water purification, power generation, and irrigation functions. This work provides a new direction for the development of multifunctional water purification systems. In this paper, a wood aerogel island solar evaporator (WAISE) with tunable surface structure and wettability is prepared by synthesizing a poly(n‐isopropylacrylamide)‐modified multi‐walled carbon nanotubes photothermal material. WAISE has effectively balanced the contradiction between evaporation rate and salt tolerance, so that this work provides a new research idea for the application of a wood evaporator in seawater desalination.
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