High-throughput droplet microfluidic synthesis of hierarchical metal-organic framework nanosheet microcapsules

作     者：Songting Wu Zhong Xin Shicheng Zhao Shengtong Sun 

作者机构：Shanghai Key Laboratory of Multiphase Materials Chermical Engineering School of Chemical Engineering East China University of Science and Technology130 Meilong RoadShanghai 200237China Center for Advanced Low-dimension MaterialsNational Engineering Resarch Center for Dyeing and Finishing of TextilsDonghua Unriversity2999 North Renmin RoadShanghai 201620China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2019年第12卷第11期

页      面：2736-2742页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China(Nos.51873035,21604024,and 21878089) This work was also sponsored by the Shanghai Municipal Natural Science Foundation(No.17ZR1440400) “Qimingxing Plan”(No.19QA1400200) “Chenguang Program”supported by the Shanghai Education Development Foundation and the Shanghai Municipal Education Commission(No.16CG32) the Fundamental Research Funds for the Central Universities 

主　　题：metal-organic framework nanosheet droplet microfluidics microcapsule hierarchical structure 

摘      要：Using two-dimensional(2D)metal-organic framework(MOF)nanosheets as new building blocks to create more complex architectures at the mesoscopic/macroscopic scale has attracted extensive interest in recent ***,it remains a great challenge to assemble MOF nanosheets into hierarchical hollow structures so *** this paper,we describe a successful example of hierarchical MOF nanosheet microcapsules,with precisely controlled sizes,produced on large scale within minutes with a continuous droplet microfluidic *** a reaction/diffusion growth mechanism,the microcapsule shells feature a continuous smooth inner layer and a porous outer *** hierarchical structure enables the encapsulation of magnetite nanoparticles inside and loading of dense gold nanoparticles outside the microcapsules,which exhibit highly efficient heterogeneous catalytic activity and easy *** present microfluidic assembly method offers a new pathway for preparing hierarchical MOF nanosheet structures,with the potential for extension to the formation of other 2D nanosheets in general.