High-efficiency nano-ZIF-94 synthesis from zinc acetate dihydrate in an environmentally friendly solvent

LÊ Văn Dương; Tạ Ngọc Đôn

doi:10.62239/jca.2026.024

Authors

Le Van Duong School of Chemistry and Life Sciences, Hanoi University of Science and Technology
Ta Ngoc Don School of Chemistry and Life Sciences, Hanoi University of Science and Technology

DOI:

https://doi.org/10.62239/jca.2026.024

Keywords:

ZIF-94, zinc acetate dihydrate, synthesis, characterization, large-scale

Abstract

This paper reports the synthesis of nano-ZIF-94 using zinc acetate dihydrate as the zinc source. Nano-ZIF-94 was successfully synthesized in ethanol under mild conditions with high purity and yield. Suitable synthesis conditions were determined through comprehensive characterization using XRD, FT-IR, SEM, TEM, N₂ adsorption–desorption, and DTA/TGA analyses. Furthermore, a scale-up synthesis procedure employing 60 g of zinc acetate dihydrate was developed, achieving a yield of 92.76%. The obtained nano-ZIF-94 exhibited a relative crystallinity close to 100%, a crystal size of approximately 60 nm (determined by SEM), and thermal stability up to 276 °C. The material also possessed a BET specific surface area of 769 m² g⁻¹, an external surface area of 252 m² g⁻¹, and an average pore diameter of 4.2 nm.

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