海水淡化
杰纳斯
蒸发
海水
材料科学
膜
化学工程
太阳能淡化
纳米技术
化学
工程类
生物化学
物理
海洋学
地质学
热力学
作者
Jinbu Su,Yibo Xie,Pengkui Zhang,Rui Yang,Boli Wang,Haitao Zhao,Y.P. Xu,Lin Xiao,Jing Shi,Chengbing Wang
出处
期刊:Desalination
[Elsevier]
日期:2023-11-01
卷期号:566: 116905-116905
被引量:8
标识
DOI:10.1016/j.desal.2023.116905
摘要
The interfacial solar steam generation for seawater desalination has attracted attentions of many researchers because of its excellent photothermal performance and efficiency. However, relatively high cost, complex equipment, and poor salt resistance limit its further practicability. Therefore, a solar evaporator with low cost, easily prepared and certain salt resistance is desideration. For this purpose, MXene was chosen as a light absorber, and filterable deposited on filter paper easily to obtain MXene-based flexible Janus membranes. Due to the introduction of ethyl cellulose, the membrane has Janus characteristics of hydrophobic upper layer, hydrophilic lower layer. Besides, the elasticity, multiple folding skill means it can be used for a long time, efficient desalination of seawater. Under one solar intensity of light, the light absorption rate of the MXene flexible Janus membrane can reach 90.81 %, the average evaporation rate is 1.34 kg m−2 h−1 in nearly 120 h of evaporation experiments, the average evaporation efficiency ≈ 81.5 %, and the main ion concentration of fresh water obtained after the experiments was also far below the World Health Organization standard. In summary, it was demonstrated that the device is suitable for long-term and efficient solar seawater desalination.
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