Enhancement of gas adsorption capacity through MOFs synthesis in clay nanotubes
발표자
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초록
내용
In this study, HNTs were used for gas adsorption with metal organic frameworks (MOFs), HKUST-1, the most widely studied MOFs owing to its high porosity. MOFs were loaded into lumen of the acid modified HNTs, EHNT and HNT-NH2. After all synthesis via solvothermal method, the final product was named to EHNT@HKUST-1, HNT-NH2@HKUST-1. Gas adsorption capacity was analyzed by Brunauer-Emmett-Teller (BET) using N2 and CO2 gases. Specifically, 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. The morphological and structural characteristics was also analyzed by SEM, TEM-EDS and XRD. By the confined tube structure of HNTs, the result images showed MOFs could be synthesized along the HNTs longitudinal axis.