Worm-like Hierarchical Porous Carbon Derived from Bio-renewable Lignin with High CO2 Capture Capacity

The worm-like hierarchical pore structure carbon material was successfully prepared by a pyrolysis process. Bio-renewable lignin was introduced as the industrially available precursor. The hierarchical porous property and worm-like channel were characterized by nitrogen adsorption-desorption isotherms and TEM. Characterization results indicated that the carbon materials exhibited microporous and mesoporous structures with worm-like frameworks. CO 2 capture tests approved that the worm-like hierarchical porous carbon showed excellent adsorption capacity of 26.2mg/g. In addition, the worm-like porous carbon shows a lower impedance.