A multi-biomimetic mist water collecting structure and preparation method thereof

Abstract

The invention discloses a multi-bio-bionic mist collection structure. A plurality of mist collection units are distributed on the upper surface of the mist collection structure. The upper surface edge of the mist collection unit is a tip structure imitating cactus thorns and It imitates the special concave structure of the trichomes around the stomata of Tillandsia leaf, so that the upper surface of the mist collection unit has a wetting gradient structure with super-hydrophilic microstructure bumps and hydrophobic regions; between the adjacent mist collection units A water storage unit whose edge is a pointed structure imitating cactus thorns is formed; the distribution of multiple mist collection units makes the upper surface of the entire mist collection structure an anisotropic wettability structure imitating the back of a desert beetle. The invention can be prepared by using a hydrophobic material with a certain stretching property, has a wide choice of raw materials, and can be prepared by using a circular table needle array and a femtosecond laser double-pulse system. The process is simple 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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