海水淡化
材料科学
蒸发器
太阳能淡化
太阳能蒸馏器
超亲水性
杰纳斯
润湿
蒸发
化学工程
纳米技术
复合材料
机械工程
化学
热交换器
工程类
物理
热力学
生物化学
膜
作者
Zhipeng Jin,Minggang Zhang,Hui Mei,Hongxia Liu,Longkai Pan,Yuekai Yan,Laifei Cheng,Litong Zhang
出处
期刊:Carbon
[Elsevier]
日期:2023-01-01
卷期号:202: 159-168
被引量:8
标识
DOI:10.1016/j.carbon.2022.11.035
摘要
Solar evaporation is a sustainable, environmentally friendly and promising solution to the problem of fresh water shortage. However, the widespread application of solar evaporators is limited by their spatial geometry, surface salt deposition and durability. Here, a Janus evaporator with a 3D chiral torsion structure is designed using 3D printing technology. Such a structure increases the number of light reflections to improve light collection. At the same time, the top and bottom layers of the Janus evaporator are endowed with different surface wettability. In particular, the top layer of superhydrophobic SiO2/CNTs aerogel acts as a photothermal absorber and prevents salt deposition, while the bottom layer of superhydrophilic CNTs aerogel accelerates water replenishment and improves water transfer efficiency. At 1 sun, the 3D Janus evaporator exhibits a high evaporation rate of 2.775 kg m−2 h−1 and a solar-to-vapor conversion efficiency of 90.2%. The 3D Janus evaporator demonstrates a strong desalination capacity in simulated seawater and allows one to obtain fresh water above drinking water standards. Moreover, it can work sustainably in different environments and has good cycle stability. The 3D Janus evaporator, prepared by 3D printing, opens up new prospects and great potential to solve the issues associated with fresh water shortage.
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