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金属有机骨架微孔复合膜的合成与应用

ZHUJIANGREN: WANGHUANTING

SHIJIAN: 2019NIAN12YUE17RI(XINGQIER)SHANGWU10: 00

DIDIAN: ZHONGDIANSHIYANSHIWULOUBAOGAOTING

ZHUJIANGRENJIESHAO:

WANGHUANTINGJIAOSHOUMUQIANSHIAODALIYAMonashDAXUEHUAXUEGONGCHENGXIJIAOSHOU,AODALIYAGONGCHENGYUANYUANSHI,RENGONGCHENGXUEYUANFUYUANZHANGYIJIMonashMOCHUANGXINZHONGXINZHUREN。CENGHUODEAODALIYAYANJIULISHIHUI(ARC)QEII Fellowship(2004)、Future Fellowship(2010),YINGGUOHUANGJIAHUAXUEXUEHUIHUISHI(2011),MEIGUOHUAXUEGONGCHENGSHIXUEHUIHUISHI(2017)YIJIAODALIYAHUANGJIAHUAXUEHUIDER.K. Murphy Medal(2019)。QILINGDAODEKETIZUZHUYAOCONGSHIGAOXINGNENGMOCAILIAO、NAMIJIEGOUCAILIAODESHEJIYUZHIBEIJIQIZAIHUANJINGHENENGYUANLINGYUDEYINGYONGYANJIU,ZAINature Materials、Nature Communications、Advanced Materials、Angewandte Chemie International EditionDENGQIKANFABIAOLUNWEN390YUPIAN,DUOCISHOUYAOZUOGUOJIHUIYITEYAOXUESHUBAOGAO。WANGHUANTINGJIAOSHOUXIANDANRENACSQIXIAHUAGONGQUANWEIQIKANIndustrial & Engineering Chemistry ResearchFUZHUBIAN。

ZHUYAONEIRONG:

亚博棋牌Metal–organic framework (MOF)-based membranes have shown attractive ion separation properties. To investigate ion selective transport mechanisms and develop membranes for potential applications, new strategies are needed to achieve ultrathin and defect-free MOF membranes with tailorable functionality. We have recently developed new seeding methods for fabricating ultrathin and high-quality molecular sieving membranes on various porous substrates. For instance, hybrid MOF nanosheets are formed by growing MOF nanocrystals on both sides of 2D graphene oxide nanosheets. These flexible, micro-sized hybrid nanosheets allow for seeding substrates with large-pores and rough surface, eliminating substrate modification required in the conventional synthesis using nanocrystal seeds. We have further developed a novel nanocrystal-mask plasma etching method for synthesizing MOF/mesoporous GO (MOF/MGO) hybrid nanosheets. Due to their ultrathin thickness and well-aligned MGO nanosheets, this hierarchical structural MOF/MGO membrane is suitable for studying ion transport and selection. We have discovered that such membranes have fast, selective ion permeation properties and demonstrated selective transport of various cations and anions in MOF-based membranes. The ZIF-8 and zirconium-based UiO-66 membranes showed a LiCl/RbCl selectivity of ~4.6 and ~1.8, respectively. UiO-66-X (X = H, NH2, and N+(CH3)3) exhibited ultrahigh F− conductivity up to ~10 S ··m−1, and ultrahigh F−/Cl− selectivity, from ~13 to ~240. Our studies open up a new avenue to develop a unique MOF membrane platform for efficient ion separations.


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