Microfluidic Approach toward Continuous and Ultrafast Synthesis of Metal−Organic Framework Crystals and Hetero Structures in Confined Microdroplets
SCIE
SCOPUS
- Title
- Microfluidic Approach toward Continuous and Ultrafast Synthesis of Metal−Organic Framework Crystals and Hetero Structures in Confined Microdroplets
- Authors
- Faustini, M; Kim, J; Jeong, GY; Kim, JY; Moon, HR; Ahn, WS; Kim, DP
- Date Issued
- 2013-10-02
- Publisher
- AMER CHEMICAL SOC(USA)
- Abstract
- Herein, we report a novel nanoliter droplet-based 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 solvotherrnal 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@diCH(3)-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@diCH(3)-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.
- Keywords
- ROOM-TEMPERATURE; HIGH-CAPACITY; THIN-FILMS; MOF-5; STORAGE; STABILITY; DESIGN
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14835
- DOI
- 10.1021/JA4039642
- ISSN
- 0002-7863
- Article Type
- Article
- Citation
- Journal of the American Chemical Society, vol. 135, no. 39, page. 14619 - 14626, 2013-10-02
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