Advanced Fog Harvesting Method by Coupling Plasma and Micro/Nano Materials

作者：Dingchen Li, Chuan Li, Ming Zhang, Menghan Xiao, Jiawei Li, Zhiwen Yang, Qixiong Fu, Pengyu Wang, Kexun Yu, Yuan Pan · 发表于：ACS Applied Materials & Interfaces · 年份：2024 · DOI：10.1021/acsami.3c17348 · 被引用次数：49 · 研究领域：Surface Modification and Superhydrophobicity、Aerosol Filtration and Electrostatic Precipitation、Advanced Sensor and Energy Harvesting Materials

Harvesting fog is a potential and effective way to alleviate the crisis of water resource shortage. A highly efficient and economical fog harvesting method has always been a global and common goal. Here, a promising fog harvesting method by coupling plasma and micro/nano materials is proposed, which can achieve 93% fog collection efficiency with consuming power of only 0.76 W/0.04 m 2 . The basic method is to utilize nanoparticles to decorate both the discharge electrode and the collecting electrode of the micro/nano electrostatic fog collector. For the discharge electrode, the nanoparticles can achieve an order of magnitude higher electric field strength and a 28.6% decrease in the operating voltage (14 kV decreases to 10 kV). For the collecting electrode, a novel composite structure of hydrophobic/hydrophilic (HB/HL) is proposed. The core advantage is the directional droplet transport at the junction of HB and HL caused by surface tension can adjust the accumulated droplets on the two sides, which avoids the droplet residue and mesh blockage in the general structure. This technology provides an innovative approach for the collection of microdroplets and a new design idea for the fog collector to deal with the water crisis.