Han Wenqing, Yan Yehai, Wang Huifang, Li Jinzhong, Zhao Ping, Liu Zhihao, Yu Fei, Cui Jian, Zhang Guangfa
Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Shandong Provincial Key Laboratory of Dryland Farming Technology, Qingdao Agricultural University, Qingdao, Shandong 266109, China.
Langmuir. 2024 Oct 15;40(41):21767-21779. doi: 10.1021/acs.langmuir.4c02924. Epub 2024 Oct 6.
Solar-driven interfacial water evaporation has become one of the most promising approaches to effectively harvesting freshwater, yet the fabrication of high-performance and multifunctional solar interfacial evaporators (SIEs) still remains a huge challenge to date. In this study, a multifunctional MXene and Fe-MOF@cellulose acetate/polyvinylpyrrolidone (MXM@CP) SIE was prepared via a facile "electrospinning and suction filtration deposition" coupling strategy. Thanks to the incorporation of MXene, MXM@CP displayed excellent photothermal conversion performance. Together with the fast water transport channel provided by the porous cellulose acetate electrospinning substrate, a remarkable solar-driven water evaporation property was achieved for MXM@CP, showing a higher water evaporation rate of 1.1 kg m h under one sun irradiation. Moreover, the resultant composite film also exhibited excellent Fenton catalytic activity to effectively degrade volatile organic compounds (VOCs) due to the synergistic effect of the MXene and Fe-based MOF (Fe-MOF). Particularly, a relatively higher degradation rate of 82.8% was acquired for the resulting evaporator toward the benzene contaminant. These results provide new insights into the construction of high-performance and multifunctional SIEs toward clean freshwater collection from the VOC-contaminated water system.
太阳能驱动的界面水蒸发已成为有效获取淡水最具前景的方法之一，但迄今为止，高性能多功能太阳能界面蒸发器（SIE）的制备仍然是一个巨大的挑战。在本研究中，通过简便的“静电纺丝与抽滤沉积”耦合策略制备了一种多功能的MXene与Fe-MOF@醋酸纤维素/聚乙烯吡咯烷酮（MXM@CP）SIE。由于MXene的引入，MXM@CP表现出优异的光热转换性能。再加上多孔醋酸纤维素静电纺丝基底提供的快速水传输通道，MXM@CP实现了显著的太阳能驱动水蒸发性能，在一个太阳光照下显示出1.1 kg m⁻² h⁻¹的更高水蒸发速率。此外，由于MXene和铁基金属有机框架（Fe-MOF）的协同作用，所得复合膜还表现出优异的芬顿催化活性，能有效降解挥发性有机化合物（VOCs）。特别是，所得蒸发器对苯污染物的降解率相对较高，达到82.8%。这些结果为构建高性能多功能SIE以从受VOC污染的水系统中收集清洁淡水提供了新的见解。
