Bioinspired asymmetric amphiphilic surface for triboelectric enhanced efficient water harvesting

Abstract The effective acquisition of clean water from atmospheric water offers a potential sustainable solution for increasing global water and energy shortages. In this study, an asymmetric amphiphilic surface incorporating self-driven triboelectric adsorption was developed to obtain clean water from the atmosphere. Inspired by cactus spines and beetle elytra, the asymmetric amphiphilic surface was constructed by synthesizing amphiphilic cellulose ester coatings followed by coating on laser-engraved spines of fluorinated ethylene propylene. Notably, the spontaneous interfacial triboelectric charge between the droplet and the collector was exploited for electrostatic adsorption. Additionally, the droplet…

• NN
  National Natural Science Foundation of China

  Award: 31971604
• NS
  Natural Science Foundation of Guangxi Province

  Award: 2018GXNSFDA281050