材料科学
蒸发
复合材料
淀粉
韧性
炭黑
水运
化学工程
环境工程
水流
生物化学
热力学
物理
工程类
天然橡胶
化学
作者
Ying Guo,Congqi Li,Peiling Wei,Kai Hou,Meifang Zhu
标识
DOI:10.1016/j.jmst.2021.07.032
摘要
Interfacial solar-driven evaporators have presented great potential for water purification owing to their low energy consumption and high steam generation efficiency. However, their further applications are hindered by the high costs and complicated fabrication processes. Here, a scalable bilayer interfacial evaporator was constructed via an affordable technique, in which carbon black deposited nonwoven fabric ([email protected]) was employed as the upper photothermal layer, as well as PVA/starch hybrid hydrogel for self-floating and water transport. Under simulated one sun irradiation, [email protected] layer displayed excellent photothermal conversion performance, whose temperature could increase 30.4 °C within 15 min. Moreover, the introduction of starch into PVA endowed the hybrid hydrogels with considerable water-absorption capability on the premise of ensuring mechanical properties. The resultant [email protected]/PVA/starch composites achieved superior interfacial adhesion performance with interfacial toughness at about 200 J m−2. Combining with good evaporation performance, salt-rejection property and high purification efficiency on pollutants, this evaporation system would become a promising candidate to alleviate water shortage.
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