An Examination of the Application of Polyurethane-Based Hydrophobic Nanocoatings Inspired by Natural Structures in Extracting Water from Air Humidity

Journal of Water and Environmental Nanotechnology

article

Ashkan Zolriasatein¹  Sepideh Abdolahzadeh²  Negar Motakef Kazemi² 

[1] Non-metallic Materials Research Department, Niroo Research Institute;Islamic Azad University of Tehran

关键词: Surface patterns;    Nanoparticles of silica;    Sol-gel;    Stenocara beetles;    Fog;   

DOI  :  10.22090/jwent.2023.02.005

学科分类：数学（综合）

来源: Iranian Environmental Mutagen Society

【 摘 要 】

Nowadays, the water shortage has become a severe issue all over the world, especially in some arid and undeveloped areas. Water is a renewable natural resource that can produce freshwater globally. Interestingly, some animals in nature can collect water from fog, which can be the inspiration to develop novel and functional water-collecting materials. A superhydrophobic surface that utilizes no energy has been synthesized from a water-collecting mechanism of the Stenocara beetles back structures. Firstly, this paper reviews the preparation methods of superhydrophobic surface coatings and then it examines patterns inspired by nature. In this paper, hydrophobic nanocoating was manufactured based on polyurethane (PUR) modified by nano-silica. Silica nanoparticles were synthesized via the sol-gel method. Then, silica nanoparticles were dispersed in polyurethane (PU) coatings. In this article, many factors of collecting moisture are evaluated, for example, temperature, pattern placement angle, pattern shape, types of surface patterns, and ambient humidity. Finally, are introduced the optimum situation for absorbing water from the fog.

【 授权许可】

CC BY