{"title":"Synthesized structure of Mg-MOF-74 decorated on ZIF-8 as solid adsorbent for CO2 capture","authors":"Bhumin Than-ardna , Suphatra Hiranphinyophat , Masahiro Matsumoto , Vissanu Meeyoo , Boonyarach Kitiyanan","doi":"10.1016/j.recm.2025.100116","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, a ZIF-8/Mg-MOF-74 composite was synthesized using a simple post-modification method. Mg-MOF-74 was grown directly on ZIF-8, forming a hierarchical structure that combines molecular sieving and enhanced adsorption capabilities. The Mg-MOF-74 outer layer, rich in open metal sites (OMS), enables strong CO<sub>2</sub> interactions. The optimized composite, prepared with a Mg<sup>2+</sup>/H<sub>4</sub>dhtp molar ratio of 1:1, exhibited a remarkable surface area of 823.61 m²/g and a pore volume of 0.76 cm<sup>3</sup>/g. It achieved exceptional CO<sub>2</sub> capture, with 4.09 mmol/g in 12 % CO<sub>2</sub> (simulated flue gas) and 0.066 mmol/g from ambient air at 30 °C and 60 % relative humidity. These findings demonstrate the efficacy of simple synthesis techniques in enhancing MOF-based CO<sub>2</sub> capture. This work emphasizes the potential of integrating MOFs for efficient CO<sub>2</sub> adsorption, offering promising strategies to address carbon emissions and environmental challenges.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"4 3","pages":"Article 100116"},"PeriodicalIF":0.0000,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Resources Chemicals and Materials","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772443325000261","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
In this study, a ZIF-8/Mg-MOF-74 composite was synthesized using a simple post-modification method. Mg-MOF-74 was grown directly on ZIF-8, forming a hierarchical structure that combines molecular sieving and enhanced adsorption capabilities. The Mg-MOF-74 outer layer, rich in open metal sites (OMS), enables strong CO2 interactions. The optimized composite, prepared with a Mg2+/H4dhtp molar ratio of 1:1, exhibited a remarkable surface area of 823.61 m²/g and a pore volume of 0.76 cm3/g. It achieved exceptional CO2 capture, with 4.09 mmol/g in 12 % CO2 (simulated flue gas) and 0.066 mmol/g from ambient air at 30 °C and 60 % relative humidity. These findings demonstrate the efficacy of simple synthesis techniques in enhancing MOF-based CO2 capture. This work emphasizes the potential of integrating MOFs for efficient CO2 adsorption, offering promising strategies to address carbon emissions and environmental challenges.