海水淡化
卤水
盐度
太阳能淡化
化学工程
太阳能蒸馏器
自愈水凝胶
蒸发
材料科学
环境科学
化学
气象学
有机化学
工程类
地质学
物理
海洋学
生物化学
膜
作者
Chun Lei,Weixin Guan,Youhong Guo,Sheng Wen,Yuyang Wang,Keith P. Johnston,Guihua Yu
标识
DOI:10.1002/ange.202208487
摘要
Abstract Interfacial solar vapor generation (SVG) is regarded as a promising and sustainable strategy for clean water production. While many materials have demonstrated excellent evaporation rates under one sun, it remains challenging to design solar evaporators without compromising SVG performance in high‐salinity brines (≥10 wt %). Herein, polyzwitterionic hydrogels (PZHs) are proposed as a novel platform for high‐salinity solar desalination. Taking advantage of the unique anti‐polyelectrolyte effects, PZHs can trap salt ions from the brine water to form a more hydrated polymer network, leading to enhanced SVG performance. PZHs exhibit an exceptional solar evaporation rate of 4.14 kg m −2 h −1 in 10 wt % brine, which is ≈20 % higher than that in pure water. It is anticipated that salt‐responsive PZHs may provide insights for the design of next‐generation solar desalination systems.
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