Porous carbon or activated carbons are important materials for the purification of gases and liquids. They are used as adsorbents in medical applications as well as electrode materials in batteries. The presented invention provides a process for the production of porous carbon by embedding inorganic nanoparticles into a carbonaceous matrix followed by a reaction with a halogen gas. The resulting material is Kroll-Carbon, a highly porous carbon material with a hierarchical pore architecture, containing well-defined micropores and adjustable mesopores. It is suitable for applications in separation and purification, like the removal of VOCs (volatile organic compounds), and biomolecules, but also for the encapsulation of enzymes, or as a electrode material for supercapacitors and batteries.
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