Abstract:
Zirconium -based MOFs adsorbent materials with different ligands, including: UIO - 66,UIO-66-NH2, UIO-66-NDC and UIO-67 were hydrothermally synthesized using terephthalic acid asthe base ligand and functionalized functional group ligands 2-aminoterephthalic acid, 1,4-naphtha⁃lenedicarboxylic acid and the long - chain ligand biphenyl dicarboxylic acid. The four adsorbentmaterials were characterized by XRD, FTIR and BET, and the adsorption performance on toluene andethyl acetate was investigated. The results showed that all four MOFs with different ligands were suc⁃cessfully synthesized, and UIO-66 showed the best adsorption performance at a relative humidity of80%, with toluene adsorption of 139.4 mg / g and ethyl acetate adsorption of 60.8 mg / g. The best ad⁃sorption performance of UIO-66 was attributed to its predominantly microporous pore size structure,showing good application potential. BET results showed that the micropore distribution was between 0.5~1 nm, which facilitated the adsorption of small molecule VOCs.