He Jingxian, Liu Jianxia, Gou Hao, Zhen Xiaofei, Li Shuaibing, Kang Yongqiang, Li An
School of New Energy and Power Engineering, Lanzhou Jiao Tong University, Lanzhou 730070, People's Republic of China.
School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou 730070, People's Republic of China.
Langmuir. 2024 Mar 12;40(10):5545-5555. doi: 10.1021/acs.langmuir.4c00237. Epub 2024 Mar 1.
Interfacial solar steam generation for sustainable and eco-friendly desalination and wastewater treatment has attracted much attention. However, costly raw materials and complex preparation processes pose constant challenges to its wide promotion. Herein, a novel, cost-effective, and scalable strategy is presented for preparing solar interface evaporators using industrial waste as a raw material. Modified polyethylene foam evaporators (M-EPEs) are simply prepared by drilling and then hydrophilic modification of industrial waste (EPE-1). M-EPEs not only retain the strong mechanical properties and thermal insulating properties (0.047 W·m·K) of EPE-1 but also exhibit superhydrophilicity and strong light absorption (over 90%). M-EPEs achieve a high evaporation rate of 1.497 kg·m·h and photothermal efficiency of up to 93.8% under 1 kW·m solar illumination. Moreover, it has excellent stability and salt tolerance. Our work addresses the environmental issues of recycling polyethylene waste and provides a facile and efficient strategy for designing low-cost, large-scale solar interface evaporators for desalination.
用于可持续和环保海水淡化及废水处理的界面太阳能蒸汽发生已备受关注。然而，昂贵的原材料和复杂的制备工艺对其广泛推广持续构成挑战。在此，提出了一种新颖、经济高效且可扩展的策略，以工业废料为原料制备太阳能界面蒸发器。改性聚乙烯泡沫蒸发器（M-EPEs）通过钻孔并随后对工业废料（EPE-1）进行亲水性改性即可简单制备。M-EPEs不仅保留了EPE-1的强机械性能和隔热性能（0.047 W·m·K），还表现出超亲水性和强光吸收性（超过90%）。在1 kW·m的太阳光照下，M-EPEs实现了1.497 kg·m·h的高蒸发速率和高达93.8%的光热效率。此外，它具有出色的稳定性和耐盐性。我们的工作解决了聚乙烯废料回收的环境问题，并为设计用于海水淡化的低成本、大规模太阳能界面蒸发器提供了一种简便高效的策略。
