CONTROLLING THE SURFACE MORPHOLOGY  FOR WATER COLLECTING FROM THE AIR

Nguyễn Thanh Bình; Đỗ Thùy Chi; Nguyễn Thùy Dương; Đào Quỳnh Mai; Hoàng Hữu Quý; Nguyễn Thành Vinh; Vũ Thị Hồng Hạnh

doi:10.34238/tnu-jst.7224

CONTROLLING THE SURFACE MORPHOLOGY FOR WATER COLLECTING FROM THE AIR

About this article

Received: 12/01/23 Revised: 23/05/23 Published: 23/05/23

Authors

1. Nguyen Thanh Binh, TNU - University of Education
2. Do Thuy Chi, TNU - University of Education
3. Nguyen Thuy Duong, Luong Ngoc Quyen High School
4. Dao Quynh Mai, Luong Ngoc Quyen High School
5. Hoang Huu Quy, Luong Ngoc Quyen High School
6. Nguyen Thanh Vinh, TNU - University of Education
7. Vu Thi Hong Hanh , TNU - University of Education

Abstract

The study proposes a method of water collection from the air inspired by the water 'trapping' phenomenon of Stenocara beetles in the Sahara desert. The unique combination of hydrophilic and hydrophobic regions facilitates water collection. The square regions in superhydrophilic were generated using a designed shadow mask incorporated with UVO (Ultra Violet – Ozone). These superhydrophilic regions were surrounded by superhydrophobic areas to enhance the water-driven ability. The survey results demonstrated outstanding water collection efficiency on the combined surface compared to the surfaces with uniform wettabilities. This can be explained by the radical task differentiation of water collection and transmission, which is explained by the energy required for the heterogeneous nucleation from the gas phase at the interface between the Aluminum surface and humid air. The results illustrate the potential of controlling the wettability of the combined surface for application-oriented water collection purposes in arid and difficult areas.

Keywords

Water collection; Collection efficiency; Hybrid; Superhydrophobic; Superhydrophilic

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DOI: https://doi.org/10.34238/tnu-jst.7224

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