期刊
NANO LETTERS
卷 21, 期 18, 页码 7806-7814出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c02788
关键词
multi-bioinspired; hydrophilic-hydrophobic patterned; honeycomb-like nanofibrous cellular grids; self-assembly; slippery substrate; fog-collecting simulation
类别
资金
- National Natural Science Foundation of China [52073052, 51925302]
- Program of Shanghai Academic/Technology Research Leader [21XD1420100]
- Natural Science Foundation of Shanghai [20ZR1470800]
- Program for Professor of Special Appointment at Shanghai Institutions of Higher Learning [TP2016019]
- Fundamental Research Funds for the Central Universities [CUSF-DH-D2018035]
- Graduate Student Innovation Fund of Donghua University [CUSF-DH-D2018035]
The team introduced a multi-bioinspired patterned fog collector, drawing inspiration from the unique structures of the Namib desert beetle, honeycomb, and pitcher plant to efficiently collect fog water. The collector utilizes hydrophilic nanofibrous bumps and a hydrophobic slippery substrate to increase water collection efficiency, demonstrating a grid structure self-assembled from electrospun nanofibers.
Harvesting water from untapped fog is a potential and sustainable solution to freshwater shortages. However, designing high-efficiency fog collectors is still a critical and challenging task. Herein, learning from the unique microstructures and functionalities of the Namib desert beetle, honeycomb, and pitcher plant, we present a multi-bioinspired patterned fog collector with hydrophilic nanofibrous bumps and a hydrophobic slippery substrate for spontaneous and efficient fog collection. Interestingly, hydrophilic nanofibrous bumps display a honeycomb-like cellular grid structure self-assembled from electrospun nanofibers. Notably, the patterned nanofibrous fog collector exhibits superior watercollecting efficiency of 1111 mg cm(-2) h(-1). The hydrophilic nanofibrous bumps increase the effective fog-collecting area, and the hydrophobic slippery substrate promotes quick transport of collected water in the desired direction reducing the secondary water evaporation, finally achieving rapid directional transport of tiny droplets and high-efficiency water collection. This work opens a new avenue to collect water efficiently and provides clues to research on the multi-bioinspired synergistical optimization strategy.
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