乙烯醇
材料科学
石墨
海水淡化
复合数
化学工程
卤水
蒸发
复合材料
纳米技术
海水
有机化学
化学
聚合物
生物化学
工程类
物理
海洋学
膜
热力学
地质学
作者
Mohan Yang,Y Wu,Mengdie Chen,Yuhao Wang,Lei Zhang,Yingxue Deng,Dezhan Ye,Yanhu Zhan,Gao Xiao,Xiancai Jiang
出处
期刊:Small
[Wiley]
日期:2024-06-21
标识
DOI:10.1002/smll.202402151
摘要
Abstract The use of hydrogel‐based interfacial solar evaporators for desalination is a green, sustainable, and extremely concerned freshwater acquisition strategy. However, developing evaporators that are easy to manufacture, cheap, and have excellent porous structures still remains a considerable challenge. This work proposes a novel strategy for preparing a self‐assembling sponge‐like poly(vinyl alcohol)/graphite composite hydrogel based on the Hofmeister effect for the first time. The sponge‐like hydrogel interfacial solar evaporator (PGCNG) is successfully obtained after combining with graphite. The whole process is environmental‐friendly and of low‐carbon free of freezing process. The PGCNG can be conventionally dried and stored. PGCNG shows impressive water storage performance and water transmission capacity, excellent steam generation performance and salt resistance. PGCNG has a high evaporation rate of 3.5 kg m −2 h −1 under 1 kW m −2 h −1 solar irradiation and PGCNG demonstrates stable evaporation performance over both 10 h of continuous brine evaporation and 30 cycles of brine evaporation. Its excellent performance and simple, scalable preparation strategy make it a valuable material for practical interface solar seawater desalination devices.
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