Dual-scale micro/nanostructures for high-efficiency water collection

被引：2
作者：
Huang, Zhi [1 ,2 ]
Zhang, Xiantao [3 ]
Hu, Xuejiao [3 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing Key Lab Energy Saving & Emiss Reduct Met, Beijing 100083, Peoples R China
[3] Wuhan Univ, MOE Key Lab Hydrodynam Machinery Transients, Sch Power & Mech Engn, Wuhan 430072, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2017年 / 92卷
关键词：
Water collection; Micro- and nano-structures; Hydrophobic; Departure radius; Moisture condensation; NON-CONDENSABLE GAS; DROPWISE CONDENSATION; SURFACES; RECOVERY; SYSTEM; GROWTH; DROPS;
D O I：
10.1016/j.materresbull.2017.04.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We describe a simple method of synthesizing dual-scale dome-like micro/nanostructures on copper using temperature controlled surface oxidation. The produced surfaces show two conflicting attributes, large contact angles and large droplet departure radii. Together, these two attributes promote water collection from air. A range of 80%-100% collection rate enhancements was observed for copper surfaces with a number of different wettability characteristics. Theoretical results showed that large departure droplets introduce strong disturbances in the diffusion boundary layer, which may be responsible for decreasing the vapor mass transfer resistance and enhancing the rate of water collection through moisture condensation. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：19 / 22
页数：4
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