Heteroatoms-doped hierarchical porous carbons: Multifunctional materials for effective methylene blue removal and cryogenic hydrogen storage

Activated carbons (ACs) have been widely used for dye removal and for H2 storage but often demonstrate limited performance due to their low porosity and lacking beneficial surface functional groups. Herein, we have designed a series of urea/thiourea and K2CO3 modified ACs from “sucrose – a biomass-derived carbohydrate” via two-step pyrolysis/activation method. As-prepared ACs demonstrate excellent textural features (e.g., specific surface area...