摘要
太阳能水蒸发对于解决净水危机潜力无限.随着研究的深入,研发高效光热转换材料和合理的材料结构设计均可以提高光热蒸发速率.因此,我们设计合成了一种双层碳基水凝胶复合材料.在一个太阳光照条件下,其最大蒸发速率可达2.19 kg m^(−2)h^(−1),光热转换效率可达93.7%.同时,该复合材料展现了优异的海水淡化性能及良好的稳定性,扩展了实际应用范围.除此之外,其可控规模化及便携性可以自如面对多种复杂的应用环境,成本低廉可以使其大规模应用于经济落后地区,为复合结构水凝胶蒸发器的生产提供了可供参考的设计思路和策略.
Solar steam generation is a promising technology to solve the freshwater crisis.With the continuous research of this technology,apart from developing efficient photothermal conversion materials that can increase the evaporation rate,it is found that a reasonable structural design can also achieve this goal.In this study,we fabricated a bilayer structural carbon-based hydrogel composite material.The composite material achieved a maximum evaporation rate of 2.19 kg m^(−2)h^(−1)and an energy conversion efficiency of 93.7%under one sun(1 kW m^(−2))irradiation,which is superior to most evaporators.Moreover,the fabricated composite material exhibited outstanding seawater desalination performance and durability,expanding the range of its practical applicability.In addition,the scalability and portability allow the composite to easily withstand various complex environments,and its production cost is low,making it easily implemented on a large scale in economically backward areas.This study provides valuable information for designing and producing composite-structure hydrogel evaporators.
作者
孙瑜堃
曲丹
刘文宁
安丽
汪夏燕
孙再成
Yukun Sun;Dan Qu;Wenning Liu;Li An;Xiayan Wang;Zaicheng Sun(Center of Excellence for Environmental Safety and Biological Effects,Beijing Key Laboratory for Green Catalysis and Separation,Faculty of Environment and Life,Beijing University of Technology,Beijing 100124,China)
基金
financially supported by the National Natural Science Foundation of China(21805004,21872001,51801006,and 21671011)
Beijing Municipal High-Level Innovative Team Building Program(IDHT20180504)
Beijing Outstanding Young Scientists Program(BJJWZYJH01201910005017)
Beijing Natural Science Foundation(2192005)
Beijing Municipal Science and Natural Science Fund Project(KM201910005016).
