Microfluidic Approach toward Continuous and Ultrafast Synthesis of Metal-Organic Framework Crystals and Hetero Structures in Confined Microdroplets

Title
Microfluidic Approach toward Continuous and Ultrafast Synthesis of Metal-Organic Framework Crystals and Hetero Structures in Confined Microdroplets
Authors
안화승
Issue Date
2013
Publisher
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Series/Report no.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY; vol.135 no.39 startpage 14619 endpage 14626
Abstract
Herein, we report a novel nanoliter dropletbased microfluidic strategy for continuous and ultrafast synthesis of metal?organic framework (MOF) crystals and MOF heterostructures. Representative MOF structures, such as HKUST-1, MOF-5, IRMOF-3, and UiO-66, were synthesized within a few minutes via solvothermal reactions with substantially faster kinetics in comparison to the conventional batch processes. The approach was successfully extended to the preparation of a demanding Ru3BTC2 structure that requires high-pressure hydrothermal synthesis conditions. Finally, three different types of core?shell MOF composites, i.e., Co3BTC2@Ni3BTC2, MOF-5@diCH3-MOF-5, and Fe3O4@ ZIF-8, were synthesized by exploiting a unique two-step integrated microfluidic synthesis scheme in a continuous-flow mode. The synthesized MOF crystals were characterized by X-ray diffraction, scanning electron microscopy, and BET surface area measurements. In comparison with bare MOF-5, MOF-5@diCH3-MOF-5 showed enhanced structural stability in the presence of moisture, and the catalytic performance of Fe3O4@ZIF-8 was examined using Knoevenagel condensation as a probe reaction. The microfluidic strategy allowed continuous fabrication of high-quality MOF crystals and composites exhibiting distinct morphological characteristics in a time-efficient manner and represents a viable alternative to the time-consuming and multistep MOF synthesis processes.
URI
dx.doi.org/10.1021/ja4039642
http://dspace.inha.ac.kr/handle/10505/33048
ISSN
0002-7863
Appears in Collections:
College of Engineering(공과대학) > Chemical Engineering (화학공학) > Local Access Journal Papers, Reports(화학공학 논문, 보고서)

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