Beetle-Inspired Hierarchical Antibacterial Interface for Reliable Fog Harvesting

被引:89
作者
Wen, Chiyu [1 ,2 ,3 ]
Guo, Hongshuang [1 ,2 ,3 ]
Bai, Haoyu [4 ]
Xu, Tong [5 ]
Liu, Mm [1 ,2 ,3 ]
Yang, Ding [1 ,2 ,3 ]
Zhu, Yingnan [1 ,2 ,3 ]
Zhao, Weiqiang [1 ,2 ,3 ]
Zhang, Jiamin [1 ,2 ,3 ]
Cao, Moyuan [4 ]
Zhang, Lei [1 ,2 ,3 ]
机构
[1] Tianjin Univ, Frontier Sci Ctr Synthet Biol, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China
[2] Tianjin Univ, Key Lab Syst Bioengn MOE, Tianjin 300350, Peoples R China
[3] Tianjin Univ, Qingdao Inst Marine Technol, Qingdao 266235, Shandong, Peoples R China
[4] Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
[5] Inner Mongolia Univ Technol, Sch Chem Engn & Technol, Hohhot 010051, Peoples R China
关键词
zwitterion; antibacteria; hydrophilic; hydrophobic; fog harvesting; SUPERHYDROPHOBIC-PATTERNED SURFACE; STAINLESS-STEEL; WATER; WETTABILITY; EFFICIENCY; FABRICATION; HYDROGELS; POLYMERS;
D O I
10.1021/acsami.9b11862
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The microdroplets in fog flow have been considered as an important resource for supplying fresh drinking water. Most of the reported works of fog collection focus on the .water-collecting ability rather than the environmental reliability of selected materials. In this work, a beetle-inspired hierarchical fog-collecting interface based on the antibacterial needle-array (ABN) and hydrophilic/hydrophobic cooperative structure is displayed. The hydrophilic ABN is coated with zwitterionic carboxybetaine (CB) brushes that endow the fog collector with a long-term cleaning in harsh environment. Due to its strong affinity to water molecules, the tilted needles with a CB coating can facilitate the capture of fog and the rapid delivery of condensed water driven by gravity. After being transported to the connected hydrophobic sheet, the collected droplets can be rapidly detached and stored in the container, achieving a high fog-harvesting rate. Furthermore, CB-patterned channels are integrated on the hydrophobic sheet for the pathway-controlled water delivery. The CB coating is able to efficiently resist bacterial adhesion and contamination during fog harvesting, protecting the device from microbiological corrosion. The current design provides a promising method to incorporate antibacterial ability into fog collectors, which offer great opportunity to develop water harvesters for real-world applications.
引用
收藏
页码:34330 / 34337
页数:8
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