{"title":"Solar-powered mixed-linker metal–organic frameworks for water harvesting from arid air","authors":"Xueli Yan, Fei Xue, Chunyang Zhang, Hao Peng, Jie Huang, Feng Liu, Kejian Lu, Ruizhe Wang, Jinwen Shi, Naixu Li, Wenshuai Chen, Maochang Liu","doi":"10.1002/eom2.12473","DOIUrl":null,"url":null,"abstract":"<p>Metal–organic frameworks (MOFs) are a class of promising nanomaterials for atmospheric water harvesting (AWH), especially in arid remote areas. However, several challenges are still faced for practical applications because of the dissatisfied water adsorption/desorption properties in terms of the capability, kinetics, and stability. Herein, we report the facile synthesis of a nano-sized octahedral nitrogen-modified MOF-801 that exhibits superior solar-powered AWH performance using a custom-made device, with a state-of-the-art water harvesting ability up to <span></span><math>\n <mrow>\n <mn>4.64</mn>\n <mspace></mspace>\n <msub>\n <mi>L</mi>\n <mrow>\n <msub>\n <mi>H</mi>\n <mn>2</mn>\n </msub>\n <mi>O</mi>\n </mrow>\n </msub>\n <mspace></mspace>\n <msup>\n <msub>\n <mi>kg</mi>\n <mtext>MOFs</mtext>\n </msub>\n <mrow>\n <mo>−</mo>\n <mn>1</mn>\n </mrow>\n </msup>\n </mrow></math> from air upon 12-h test under a relative humidity (RH) of 30% and simulated sunlight irradiation. The nitrogen-modified MOF-801 with rapid sorption–desorption kinetics, uptakes <span></span><math>\n <mrow>\n <mn>0.29</mn>\n <mspace></mspace>\n <msub>\n <mi>g</mi>\n <mrow>\n <msub>\n <mi>H</mi>\n <mn>2</mn>\n </msub>\n <mi>O</mi>\n </mrow>\n </msub>\n <mspace></mspace>\n <msup>\n <msub>\n <mi>g</mi>\n <mtext>MOFs</mtext>\n </msub>\n <mrow>\n <mo>-</mo>\n <mn>1</mn>\n </mrow>\n </msup>\n </mrow></math> of water at 30% RH within 30 min and releases 90% of the captured water within 10 min under 1-sun illumination. The success relies on N-doping-induced mixed-linkers in the form of 2,3-diaminobutanedioic acid and fumaric acid in the unique pore structures of the MOFs for rapid and high-capacity water capture. The N-doped MOF-801 with water uptake capacity, fast adsorption kinetics, and cycle stability sheds light on the practical use of MOFs for effective solar-powered water harvesting from droughty air.</p><p>\n <figure>\n <div><picture>\n <source></source></picture><p></p>\n </div>\n </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":null,"pages":null},"PeriodicalIF":10.7000,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12473","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"EcoMat","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eom2.12473","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Metal–organic frameworks (MOFs) are a class of promising nanomaterials for atmospheric water harvesting (AWH), especially in arid remote areas. However, several challenges are still faced for practical applications because of the dissatisfied water adsorption/desorption properties in terms of the capability, kinetics, and stability. Herein, we report the facile synthesis of a nano-sized octahedral nitrogen-modified MOF-801 that exhibits superior solar-powered AWH performance using a custom-made device, with a state-of-the-art water harvesting ability up to from air upon 12-h test under a relative humidity (RH) of 30% and simulated sunlight irradiation. The nitrogen-modified MOF-801 with rapid sorption–desorption kinetics, uptakes of water at 30% RH within 30 min and releases 90% of the captured water within 10 min under 1-sun illumination. The success relies on N-doping-induced mixed-linkers in the form of 2,3-diaminobutanedioic acid and fumaric acid in the unique pore structures of the MOFs for rapid and high-capacity water capture. The N-doped MOF-801 with water uptake capacity, fast adsorption kinetics, and cycle stability sheds light on the practical use of MOFs for effective solar-powered water harvesting from droughty air.