Zhenxing Wang, Min Hu, Lin Zhu, Jiajing Zhou, Fang He, Yanzhu Liu, Yongxiu Li, Yuexiang Li, Zhixing Lin, Frank Caruso
{"title":"Cracked Metal–Phenolic Networks with Durable Confinement Capillarity for Enhanced Solar Desalination","authors":"Zhenxing Wang, Min Hu, Lin Zhu, Jiajing Zhou, Fang He, Yanzhu Liu, Yongxiu Li, Yuexiang Li, Zhixing Lin, Frank Caruso","doi":"10.1002/adma.202503896","DOIUrl":null,"url":null,"abstract":"Solar-driven interfacial desalination is a promising strategy to address freshwater shortages. Water evaporation can be enhanced through confinement capillarity by generating ultra-thin water layers on the internal surfaces of porous photothermal materials. However, realizing confinement capillarity relies on coatings composed of aggregated nanospheres, which likely detach under mechanical compression, limiting their practical application. Herein, nature-inspired crack patterns are introduced into adhesive photothermal supramolecular materials, metal–phenolic network coatings, forming C-MPNs to achieve durable confinement capillarity. The crack patterns can be controlled to optimize water transport through narrow channels, enhancing the evaporation rate from 1.6 to 3.3 kg m<sup>−2</sup> h<sup>−1</sup> while preventing salt accumulation during seawater desalination. Furthermore, the cracks serve as buffer zones, significantly improving the mechanical stability of C-MPN coatings under compression (exhibiting negligible change after 300 cycles)—overcoming a key challenge that has hindered the practical application of confinement capillarity. Furthermore, due to the enhanced confinement capillarity in C-MPNs, high evaporation performance is sustained even as the size of the photothermal material increases—a rare characteristic among 3D photothermal materials. This work provides fundamental insights into the design of photothermal coatings with confinement capillarity, paving the way for their application in solar desalination.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"53 1","pages":""},"PeriodicalIF":27.4000,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/adma.202503896","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Solar-driven interfacial desalination is a promising strategy to address freshwater shortages. Water evaporation can be enhanced through confinement capillarity by generating ultra-thin water layers on the internal surfaces of porous photothermal materials. However, realizing confinement capillarity relies on coatings composed of aggregated nanospheres, which likely detach under mechanical compression, limiting their practical application. Herein, nature-inspired crack patterns are introduced into adhesive photothermal supramolecular materials, metal–phenolic network coatings, forming C-MPNs to achieve durable confinement capillarity. The crack patterns can be controlled to optimize water transport through narrow channels, enhancing the evaporation rate from 1.6 to 3.3 kg m−2 h−1 while preventing salt accumulation during seawater desalination. Furthermore, the cracks serve as buffer zones, significantly improving the mechanical stability of C-MPN coatings under compression (exhibiting negligible change after 300 cycles)—overcoming a key challenge that has hindered the practical application of confinement capillarity. Furthermore, due to the enhanced confinement capillarity in C-MPNs, high evaporation performance is sustained even as the size of the photothermal material increases—a rare characteristic among 3D photothermal materials. This work provides fundamental insights into the design of photothermal coatings with confinement capillarity, paving the way for their application in solar desalination.
期刊介绍:
Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.