Effects of Solvent on Achieving Reduced Pore Size and Enhanced Surface Area in Zeolitic Imidazolate Framework-8 Nanoparticles
DOI:
https://doi.org/10.32628/IJSRSET2512504Keywords:
ZIF-8, Methanol, Specific surface areaAbstract
The synthesis of zeolitic imidazolate framework-8 (ZIF-8) nanoparticles was achieved by combining 2-methylimidazole (MIM) and zinc nitrate hexahydrate (Zn) in a methanol solution without additives at room temperature. This study investigates the impact of solvent volume on the specific surface area and structural properties of ZIF-8, while maintaining a constant molar ratio of the precursors. BET and single-point surface area assessments revealed significant variations in surface area, despite the fact that all samples exhibited consistent crystallinity and functional groups, confirmed by XRD and FT-IR analyses. Surface area and pore volume were improved as the methanol volume was increased. The sample that was synthesized using 1.2 mol of methanol exhibited the highest microporosity and network accessibility. The results indicate that the volume of the solvent is crucial in influencing nucleation and growth, which in turn impacts the porosity and structural integrity of the framework produced. It is crucial to optimise methanol concentration to effectively tailor ZIF-8 materials for high-performance applications.
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