Multifunctional and asymmetrically superwettable Janus membrane for all-day freshwater harvesting

Abstract

Taking advantage of natural resources for freshwater production is the key to alleviating crises during maritime emergencies. Herein, we designed an asymmetrically superwettable Janus membrane for all-day freshwater harvesting; use of this membrane provided a high-quality freshwater supply with excellent solar desalination of 1.55 kg m⁻² h⁻¹ (daytime) and fog collection of 11.31 kg m⁻² h⁻¹ (nighttime).