金属有机框架复合酚醛树脂基整体式亲水炭应用于空气水捕集  

Hydrophilic carbon monoliths derived from metal-organic frameworks@resorcinol-formaldehyde resin for atmospheric water harvesting

作　　者：唐宋元 王永胜[1] 原亚飞 巴雅琪 王立秋[1] 郝广平[1] 陆安慧[1] TANG Song-yuan;WANG Yong-sheng;YUAN Ya-fei;BA Ya-qi;WANG Li-qiu;HAO Guang-ping;LU An-hui(State Key Laboratory of Fine Chemicals,Liaoning Key Laboratory for Catalytic Conversion Carbon Resources,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化工学院,精细化工国家重点实验室,辽宁省低碳资源高值化利用重点实验室,辽宁大连116024

出　　处：《新型炭材料》2022年第1期237-244,共8页New Carbon Materials

基　　金：国家自然科学基金项目(21975037);中央高校基本科研业务费资助(DUT18RC(3)075);辽宁省兴辽英才计划项目资助(XLYC1807205)。

摘　　要：针对全球水资源短缺的问题,空气水捕集被认为是潜在的解决方案。吸附法空气水捕集技术具有装置结构简单、能量效率高、适用范围广等优点,受到广泛关注,其关键在于高性能多孔吸附剂的开发。多孔炭材料具有孔结构丰富、制备成本低等优点。但是常见炭材料的表面疏水,对于低浓度水汽吸附效果不显著。基于此,本文采用局部亲水强化的策略,通过在酚醛树脂交联骨架中穿插引入可衍生为极性位点的金属有机框架炭前驱体,制备了具有强亲水性的整体式多孔炭。进一步将其应用于“三明治”式空气水捕集装置,在40%~80%相对湿度环境中,吸附剂的水汽捕集质量分数可达约20%。这一调控策略也为制备整体式亲水炭材料应用于其他领域提供了新思路。Atmospheric water harvesting(AWH)is considered a promising technique to address the problem of global water shortage.Adsorption-based AWH technology,has the advantages of a simple device structure,high energy efficiency,wide application range,etc.,and has attracted much attention.For the adsorption,one of the key issues is to find high-performance porous adsorbents.Porous carbons have exceptional stability,high porosity and low cost,but are usually highly hydrophobic with a low affinity for polar water molecules.A class of monolithic porous carbons with good hydrophilicity was prepared by the pyrolysis of composites consisting of a metal-organic framework in a resorcinol-formaldehyde resin matrix,in which the metal-organic parts developed polar sites in the final products.AWH tests showed that in a relative humidity of 40%-80%,the water capture capacity of the adsorbents reached 20%.

关 键 词：多孔炭 表面亲水改性 金属有机框架 空气水捕集 

分 类 号：TQ028.2[化学工程]