Affiliation:
1. National Engineering Research Center for Dyeing and Finishing of Textiles College of Chemistry and Chemical Engineering Donghua University 2999 North Renmin Road Shanghai 201620 China
2. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University 2999 North Renmin Road Shanghai 201620 China
Abstract
AbstractFog harvesting is a sustainable approach to dealing with the global freshwater crisis. A range of strategies in microstructure design and wettability remodeling for fog management are clearly explained. However, the influence of thermodynamic endothermic and exothermic processes on fog harvesting is rarely explored. Here, a thermodynamically induced interfacial condensation‐enhanced fog‐harvesting fabric (AWF‐6) is developed that also incorporates asymmetric geometry and surface chemistry. By coupling the high thermal conductivity interface supported by boron nitride nanosheets (BNNS), the Laplace pressure difference generated by nanoneedles, and the wettability gradient constructed by stearic acid (STA), the fabric achieves a water collection rate (WCR) of 1538.4 mg h cm−2, which is the maximum value in state‐of‐the‐art cotton‐based fog harvesting devices (FHDs). Furthermore, the potential application of AWF‐6 in agricultural irrigation is demonstrated. This study shows a thermodynamic proposal for building next‐generation fibrous FHDs.
Funder
National Natural Science Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry