MOF-Derived Hierarchical Nanoporous Carbons for Improved Hydrogen Isotope Separation

Abstract

Hierarchical nanoporous carbons were prepared via direct carbonization of a MOF precursor to improve hydrogen isotope adsorption and separation. The carbonization process generates a porous structure with coexisting micropores and mesopores. The resulting materials exhibit enhanced adsorption capacity and improved separation performance compared with the parent MOF. Among them, bio-MOF-C1000 shows the best overall performance, with D2 and H2 adsorption capacities increased by 57% and 51%, respectively. These results demonstrate that MOF carbonization enables tuning of pore structure and adsorption behavior in nanoporous carbons for hydrogen isotope separation.