{"title":"Multifunctional solar water harvester with high transport selectivity and fouling rejection capacity","authors":"Xuanzhang Hao, Houze Yao, Panpan Zhang, Qihua Liao, Kaixuan Zhu, Jian Chang, Huhu Cheng, Jiayin Yuan, Liangti Qu","doi":"10.1038/s44221-023-00152-y","DOIUrl":null,"url":null,"abstract":"Shortage of clean water continues to grow around the world, and the recent solar-powered interfacial system has emerged as a sustainable, efficient and CO2-neutral approach to produce clean water. However, complex contaminants in surface water accompanied with environment pollution set huge obstacles for harvesting clean water via previous strategies. Here we develop a solar-powered graphene/alginate hydrogel (GAH)-based clean water extractor of super resistance to the transport of complex contaminants and ultra-antifouling capacity. This GAH features a high selectivity in water transport by rejecting >99.5% of volatile organic compounds, >99.3% of ions (Na+, Mg2+, K+ and Ca2+) and 100% of non-volatile organic compounds and bacteria; meanwhile, GAH is capable of rejecting oil adhesion by forming a large contact angle >140° under water, deactivating nearly 100% bacteria on surface and preventing salt crystallization. Given such promising adaptability to a wide environment, this GAH can directly convert surface water of complex components into safe drinkable water. Solar-powered interfacial system has emerged as a sustainable, efficient and CO2-neutral strategy to produce clean water. The solar-powered graphene/alginate hydrogel-based clean water extractor shows super resistance to the transport of complex contaminants and has an ultra-antifouling capacity.","PeriodicalId":74252,"journal":{"name":"Nature water","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44221-023-00152-y.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature water","FirstCategoryId":"1085","ListUrlMain":"https://www.nature.com/articles/s44221-023-00152-y","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Shortage of clean water continues to grow around the world, and the recent solar-powered interfacial system has emerged as a sustainable, efficient and CO2-neutral approach to produce clean water. However, complex contaminants in surface water accompanied with environment pollution set huge obstacles for harvesting clean water via previous strategies. Here we develop a solar-powered graphene/alginate hydrogel (GAH)-based clean water extractor of super resistance to the transport of complex contaminants and ultra-antifouling capacity. This GAH features a high selectivity in water transport by rejecting >99.5% of volatile organic compounds, >99.3% of ions (Na+, Mg2+, K+ and Ca2+) and 100% of non-volatile organic compounds and bacteria; meanwhile, GAH is capable of rejecting oil adhesion by forming a large contact angle >140° under water, deactivating nearly 100% bacteria on surface and preventing salt crystallization. Given such promising adaptability to a wide environment, this GAH can directly convert surface water of complex components into safe drinkable water. Solar-powered interfacial system has emerged as a sustainable, efficient and CO2-neutral strategy to produce clean water. The solar-powered graphene/alginate hydrogel-based clean water extractor shows super resistance to the transport of complex contaminants and has an ultra-antifouling capacity.