A Hydrophilic/Hydrophobic Composite Structure for Water Harvesting from the Air
Küçük Resim Yok
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
E.U. Printing And Publishing House
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The freshwater shortage is one of the world's most pressing challenges needs to be addressed rapidly. To overcome this challenge, harvesting water from the air has emerged as a simple and cost-effective approach. Traditional wire meshes have been already used for atmospheric water harvesting from the fog. In foggy areas, the wire meshes are placed perpendicular to wind and water droplets in fog carried by the wind are trapped and deposited on the surface of meshes. The purpose of this study is to improve the water harvesting capacity of the traditional wire mesh by modifying its surface using a nature-inspired composite structure consisting of hydrophilic and hydrophobic zones. Hydrophilic zones were obtained by electrospinning or electrospraying of the polyamide 6 (PA6) / chitosan (CH) blend, and hydrophobic zones were attained by electrospraying of polycaprolactone (PCL). The water harvesting capacity of the resulting meshes was tested and compared with each other. The highest water harvesting capacity was achieved with the PA6/CH nanofiber coated wire mesh as 87 mg / cm2/h. This mesh collected twice as much water compared to the uncoated mesh. However, its water collection rate decreased when nanofiber surface reached the saturation level. The addition of hydrophobic PCL particles onto PA6/CH nanofibers significantly reduced the amount of water captured. When both PA6/CH and PCL were electrosprayed on the wire mesh in particle form water harvesting capacity slightly increased, but it was still poor compared to uncoated mesh.
Açıklama
Anahtar Kelimeler
Water harvesting, hydrophilic/hydrophobic, electrospinning, electrospraying, Nanofibers, Surfaces, System
Kaynak
Tekstil Ve Konfeksiyon
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
32
Sayı
4
