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Pickering-Droplet-Derived MOF Microreactors for Continuous-Flow Biocatalysis with Size Selectivity
Danping Tian1, Xiaoming Zhang1, Hu Shi1
1School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, People's Republic of China.
Journal of the American Chemical Society
|October 4, 2021
Summary
Researchers developed novel enzymatic microreactors using a Pickering emulsion method. These robust Metal-Organic Framework (MOF) microreactors offer controlled environments for enzymes, demonstrating excellent stability and selectivity for biotechnology applications.
Area of Science:
- Materials Science
- Biotechnology
- Chemical Engineering
Background:
- Enzymatic microreactors are crucial for synthetic protocells and biotechnology.
- Constructing microreactors with controlled reactivity and sieving ability remains a challenge.
Purpose of the Study:
- To develop a novel method for fabricating enzymatic microreactors.
- To create microreactors with engineered molecular sieving and controlled interior environments.
Main Methods:
- Utilized a Pickering emulsion interface-directed synthesis.
- Grew a Metal-Organic Framework (MOF) layer around silica emulsifier-stabilized droplets.
- Encapsulated free enzymes within the compartmentalized interior droplets.
Main Results:
- Fabricated robust, defect-free MOF microreactors with size-selective permeability.
- Demonstrated 1000-hour continuous-flow reaction stability with high enantioselectivity.
- Showcased tunable catalytic efficiency by engineering MOF layer and interior environments.
Conclusions:
- The MOF-based enzymatic microreactors offer a promising platform for artificial cellular systems.
- This method provides a new avenue for designing customized microreactors for practical biotechnology.
- The microreactors exhibit excellent stability, selectivity, and tunable catalytic properties.
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