Structure Screening of Oscillating Feedback Microreactors for the High-Throughput Synthesis of Zeolitic Imidazolate Framework-67 Nanoparticles with Controlled Size and Morphology

The relationship between the flow pattern evolution and performance of oscillating feedback microreactors (OFMs) for the synthesis of ZIF-67 nanoparticles was investigated by a photomicrography technique. Accordingly, an oscillating feedback microreactor (OFM) with an optimized structure was identif...

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Bibliographic Details
Published in:Industrial & engineering chemistry research Vol. 63; no. 10; pp. 4283 - 4296
Main Authors: Chen, Han, Zhang, Jia-Ni, Gao, Xin, Xie, Ting-Liang, Yang, Hua, Wei, Shi-Xiao, Tong, Hao-Tian, Au, Chak-Tong, Yin, Shuang-Feng
Format: Journal Article
Language:English
Published: American Chemical Society 13-03-2024
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Summary:The relationship between the flow pattern evolution and performance of oscillating feedback microreactors (OFMs) for the synthesis of ZIF-67 nanoparticles was investigated by a photomicrography technique. Accordingly, an oscillating feedback microreactor (OFM) with an optimized structure was identified for high-throughput ZIF-67 production. By varying the experimental conditions (i.e., flow rate, aging time, precursor concentration [Co2+], solvent, and cobalt source), the average size of ZIF-67 products can be adjusted (from 16 to 294 nm) with narrow particle size distribution (geometric standard deviation: 1.08–1.14) as well as with controllable morphology (sphere or rhombic dodecahedron). The maximum total flow rate can reach 160 mL/min, indicating that a high-throughput synthesis of ZIF-67 is achieved. The screening method can be extended to optimize other microreactors, and the resulting OFMs can be applied to produce other kinds of nanoparticles.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.3c03160