Wang Qingmiao, Guo Qijing, Jia Feifei, Li Yanmei, Song Shaoxian
Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei Province 430070, China.
Department of Mines, Metallurgy and Geology Engineering, University of Guanajuato, Av. Benito Juárez 77, Zona Centro, Guanajuato 36000, Mexico.
ACS Appl Mater Interfaces. 2020 Jul 22;12(29):32673-32680. doi: 10.1021/acsami.0c07162. Epub 2020 Jul 9.
Aerogels, with porous channels for water supply and vapor escape, can provide many inherent advantages in solar desalination and wastewater treatment. For the first time, this work demonstrates the preparation of a novel three-dimensional (3D) MoS-based aerogel with high porosity and mechanical stability by a facile strategy for solar desalination. This 3D MoS aerogel has an excellent light-absorbing efficiency of over 95% within the whole solar spectrum range, enabling a high evaporation efficiency of 88.0% under a low solar irradiation of 1.0 kW m and superhigh evaporation efficiencies of over 90% under a slightly enhanced solar irradiation of 1.5-3.0 kW m as well as a remarkable desalination performance. In addition, the excellent mechanical stability of this MoS aerogel renders it to be reused for at least 10 cycles with stable water productivity. Because of its 3D architectures with high porosity and easy separation, this MoS-based aerogel also provides promising applications in solar-driven water purification, sterilization, and so forth.
气凝胶具有用于供水和蒸汽逸出的多孔通道，在太阳能海水淡化和废水处理方面具有许多固有优势。这项工作首次展示了通过一种简便的策略制备出一种具有高孔隙率和机械稳定性的新型三维（3D）硫化钼基气凝胶用于太阳能海水淡化。这种3D硫化钼气凝胶在整个太阳光谱范围内具有超过95%的优异光吸收效率，在1.0千瓦/平方米的低太阳辐照下实现了88.0%的高蒸发效率，在1.5 - 3.0千瓦/平方米的稍高太阳辐照下实现了超过90%的超高蒸发效率以及卓越的脱盐性能。此外，这种硫化钼气凝胶出色的机械稳定性使其能够以稳定的水生产率重复使用至少10个循环。由于其具有高孔隙率和易于分离的3D结构，这种硫化钼基气凝胶在太阳能驱动的水净化、杀菌等方面也具有广阔的应用前景。
