Yang Enquan, Wei Na, Li Menghan, Xu Ruiqi, Sui Yiling, Kong Mengyao, Ran Xuchao, Cui Hongzhi
School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
ACS Appl Mater Interfaces. 2022 Jul 6;14(26):29788-29796. doi: 10.1021/acsami.2c05306. Epub 2022 Jun 22.
The rise of solar steam generation is an effective strategy to mitigate clean water shortages. However, achieving further improvements in conversion efficiency and stability remains a challenge. Here, 1T/2H-MoS nanosheets were uniformly assembled on activated carbon fiber cloth (A-CFC) through a facial hydrothermal method, and a three-dimensional (3D)-artificial transpiration device (ATD) was prepared using the plant transpiration process. The combination of activated carbon fiber cloth and 1T/2H phase MoS exhibits high light absorption (∼97.5%), excellent mechanical stability, large evaporation area, and easy escape of vapor. Additionally, the 3D hollow cone of the MoS/carbon fiber cloth can effectively reduce radiative and convective energy loss and then achieve the enhancement of energy collection from the environment. An outstanding evaporation rate of 1.61 kg·m·h with an optimum conversion efficiency of 97% under one sun is reached. Based on the facile fabrication, excellent stability, and high solar conversion efficiency, this nature-inspired design of 3D 1T/2H-MoS/A-CFC is expected to facilitate large-scale applications for seawater purification and desalination.
太阳能蒸汽产生的兴起是缓解清洁水短缺的有效策略。然而，在转换效率和稳定性方面实现进一步提高仍然是一项挑战。在此，通过简便的水热法将1T/2H-MoS纳米片均匀组装在活性炭纤维布（A-CFC）上，并利用植物蒸腾过程制备了一种三维（3D）人工蒸腾装置（ATD）。活性炭纤维布与1T/2H相MoS的组合表现出高吸光率（约97.5%）、优异的机械稳定性、大蒸发面积以及蒸汽易于逸出的特点。此外，MoS/碳纤维布的3D中空锥体可有效减少辐射和对流能量损失，进而实现从环境中收集能量的增强。在一个太阳光照下达到了1.61 kg·m⁻²·h⁻¹的出色蒸发速率，最佳转换效率为97%。基于简便的制造工艺、出色的稳定性和高太阳能转换效率，这种受自然启发设计的3D 1T/2H-MoS/A-CFC有望推动海水净化和脱盐的大规模应用。
