Some aspects of MOF-74 (Zn2DOBDC) metal-organic framework formation using THF as the solvent
Starodubtseva A.A. Dubrovskiy V.A. Malik S.D. Lyssenko K.A. Sembayeva A.M. Morontsev A.A. Galeyeva A.K. Trussov I.A.
25 October 2024Royal Society of Chemistry
CrystEngComm
2024#26Issue 436161 - 6171 pp.
This study investigates the synthesis of zinc-based metal-organic frameworks (MOFs) using tetrahydrofuran (THF) as a solvent, focusing on forming distinct phases as models for potential battery applications. Contrary to expectations, the synthesis produced three unique phases: alpha, beta, and Zn-MOF-74a, instead of the anticipated Zn-MOF-74 structure. Comprehensive structural analysis using X-ray diffraction, infrared spectroscopy, and thermogravimetric analysis (TGA) revealed distinct crystallographic features for each phase, particularly the novel Zn-MOF-74a phase, which exhibits a heart-shaped pore structure and differs from the classic hexagonal MOF-74. The study also includes the first structural determination of the dry H4DOBDC precursor, providing crucial insights for future research. The results demonstrate the significant impact of solvent choice, temperature, and pH on MOF phase formation and offer potential applications in energy storage and catalysis, especially for larger molecules. Further investigation is required to fully understand the electrochemical properties and phase stability of the newly identified Zn-MOF-74a and beta phases.
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Center of Phisico-Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, Almaty, 010000, Kazakhstan
Scientific Research Institute of New Chemical Technologies and Materials, Al-Farabi Kazakh National University, Almaty, 010000, Kazakhstan
Skoltech Center for Electrochemical Energy Storage, Skolkovo Institute of Science and Technology, Moscow, 121205, Russian Federation
M. V. Lomonosov Moscow State University, Moscow, 119991, Russian Federation
Science Fund JSC, Astana, 010000, Kazakhstan
A. V. Topchiev Institute of Petrochemical Synthesis, RAS Russia, Moscow, 119991, Russian Federation
Center of Phisico-Chemical Methods of Research and Analysis
Scientific Research Institute of New Chemical Technologies and Materials
Skoltech Center for Electrochemical Energy Storage
M. V. Lomonosov Moscow State University
Science Fund JSC
A. V. Topchiev Institute of Petrochemical Synthesis
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