Effects of activating agent and pyrolysis temperature on the pore structure and adsorption performance of sweet potato vine-based activated carbon

(CZn500), respectively. The adsorption kinetics were consistent with the pseudo-second-order kinetic model. This is primarily attributed to their large BET surface area and high total pore volume. Simultaneously, mechanisms such as electrostatic attraction, π-π stacking, hydrophobic interaction, and hydrogen bonding also make important contributions to the materials' high adsorption performance. The prepared materials demonstrate that sweet potato vine can serve as a biomass feedstock for the production of activated carbon. Different preparation methods can impart distinct functionalities and physicochemical properties to the activated carbon. By selecting appropriate activating agents and pyrolysis temperatures, it is possible to successfully produce sweet potato vine-based activated carbon with high BET specific surface area, large pore volume, and excellent methylene blue adsorption performance.