Multi-biomimetic fog water collecting structure and preparation method thereof

Abstract

The invention discloses a multi-biomimetic fog water collecting structure. A plurality of fog water collecting units are distributed on the upper surface of the fog water collecting structure; the edges of the upper surfaces of the fog water collecting units are tip structures imitating cactus thorns, and the middles of the upper surfaces of the fog water collecting units are special concave structures imitating hairy bodies around air holes of dracocephalum moldavica leaves, so that the upper surfaces of the fog water collecting units are of a wetting gradient structure with super-hydrophilicmicrostructure convex points and hydrophobic regions arranged alternately; a water storage unit is formed between every two adjacent fog water collecting units, and the the edges of the water storageunits are of a cactus thorn-like tip structure; and due to the distribution of the fog water collecting units, the upper surface of the whole fog water collecting structure is of a desert beetle backanisotropism wettability imitating structure. The multi-biomimetic fog water collecting structure can be prepared from a hydrophobic material with a certain tensile property, is wide in raw materialselection, can be prepared by adopting a circular truncated cone needle array and a femtosecond laser double-pulse system, is simple in process and can be prepared on a large scale.

Description

technical field [0001] The invention belongs to the technical field of mist collection, and in particular relates to a bionic mist collection structure and a preparation method thereof. Background technique [0002] The shortage of fresh water resources has become a serious global problem that needs to be solved urgently. Nowadays, seawater desalination and wastewater treatment are regarded as effective ways to recover fresh water, but there are problems such as high energy consumption, low efficiency, and complicated process. Fog water collection refers to the conversion of hidden water resources contained in the air into explicit and usable water resources. It is an environmentally friendly, low-cost and sustainable method to alleviate the scarcity of fresh water. [0003] The potential for recovering fresh water from the air has not been effectively exploited so far. At present, a large number of mesh structures have been invested in fog water collection to capture fog ...

AI Technical Summary

Problems solved by technology

However, the bionic advantages of a single organism are limited, and there are problems such as low fog water collection efficiency and secondary evaporation.

At the same time, the current preparation methods for biomimetic mist collection structures include electrochemical methods, photo / mechanical lithography, and electrospinning methods, all of which have their specific advantages, but generally have disadvantages such as complex preparation processes and difficulty in large-scale preparation.

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