Hybrid composites of selectively modified clay nanotubes and metal-organic frameworks with advantage in gas adsorption capacity.
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초록
내용
Gas adsorbents were synthesized with the modified HNTs and MOFs, HKUST-1, the most widely studied MOFs owing to their high porosity. Hybrid composites synthesized by the solvothermal method by loading the MOF precursor into the lumen of the surface-modified HNTs are referred to as EHNT@HKUST-1 and HNT-NH2@HKUST-1. The gas adsorption capacity was analyzed by Brunauer-Emmett-Teller (BET) using N2 and CO2 gases. Specifically, the EHNT@HKUST-1 composite showed enhanced CO2 gas adsorption capacity compared to HNT@HKSUT-1, being increased about 14.9 times, from 8.344 cm3(STP)g-1 to 19.332 cm3(STP)g-1. Additionally, HNT-NH2@HKUST-1 indicated around 24.849 cm3(STP)g-1 of CO2 gas adsorption capacity. Additionally the morphological and structural characteristics were also analyzed by SEM, TEM-EDS, and XRD.