Robust Superhydrophobic/Superoleophilic Wrinkled Microspherical MOF@rGO Composites for Efficient Oil-Water Separation
Robust Superhydrophobic/Superoleophilic Wrinkled Microspherical MOF@rGO Composites for Efficient Oil-Water Separation
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用于高效油水分离的坚固超疏水/超亲油褶皱微球MOF@rGO复合材料
DOI：
10.1002/anie.201814487
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发表时间：
2019-04-08
影响因子：
16.6
通讯作者：
Meng, Hong
中科院分区：
文献类型：
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作者：
Gu, Jiahui;Fan, Hongwei;Meng, Hong
石墨烯/金属有机骨架（MOFs）复合材料具有石墨烯和金属有机骨架（MOFs）的固有特性，如高孔隙率、超低密度和易于定制的超润湿性，具有良好的三维（3D）结构，有望用于含油废水的吸附处理。在这项研究中，新的褶皱的三维微球MOF@rGO复合材料具有超疏水性和超亲油性能，通过嵌入MOF纳米颗粒之间的氧化石墨烯（GO）纳米片，然后通过高温还原自组装。微球复合材料具有独特的微/纳米层次结构，由褶皱的还原GO（rGO）纳米层插入分散良好的MOF纳米颗粒。与超润湿性和丰富的介孔/微孔相结合，褶皱ZIF-8@rGO微球的特殊结构显示出对有机溶剂和油从水中的非常快的吸收速率和高的吸附选择性。
Graphene/MOF-based composite materials in three-dimensional (3D) architectures are promising for the treatment of oil-containing wastewater by absorption owing to their intrinsic properties of graphene and metal-organic frameworks (MOFs), such as high porosity, ultralow density, and facilely tailored superwettability. In this study, novel wrinkled 3D microspherical MOF@rGO composites with both superhydrophobic and superoleophilic properties were developed by embedding MOF nanoparticles between graphene oxide (GO) nanosheets, followed by high-temperature reduction self-assembly. The microspherical composites feature a unique micro/nano hierarchy consisting of crumpled reduced GO (rGO) nanosheels intercalated with well-dispersed MOF nanoparticles. combined with the superwettability and abundant meso/microporosity, the peculiar architectures of wrinkled ZIF-8@rGO microspheres show very fast absorption rates and high sorption selectivity for organic solvents and oils from water.