서강대학교

초록

Zirconium(Zr)-based MOFs are a type of metal-organic frameworks that is a porous crystalline material and are attracting attention in the academic and industrial fields due to their chemical and structural diversity. One of the Zr-based MOFs, MOF-808, was synthesized by using a mixed ligand strategy for enhancing DMMP gas adsorption capacity under RH 15% humidity by increasing the additional adsorption site. The crystallinity of defective MOF-808 improved and the particle size increased according to the mixed ligand ratio. Through the NMR, XPS, and HI analysis, it was confirmed that the content of the mixed ligand, 5-hydroxy isophthalic acid, increased the surface –OH concentration of defected MOF-808. And, DMMP breakthrough experiments under humid conditions showed that the defective MOF-808 with additional hydroxyl groups improved DMMP adsorption performance. Finally, defective MOF-808 was successfully synthesized with improved high performance and structural stability, and it is thought that it can be applied to the adsorbents of chemical warfare agents actually present in the atmosphere compared to the existing adsorbents.