Effect of the Thermal Activation on the Adsorption Capacity of Cationic and Anionic Dyes in Magnetic Carbon.

ABSTRACT: The sustainable synthesis of multifunctional magnetic carbons was achieved using sugar cane bagasse by hydrothermal carbonization with ferric nitrate, followed by thermal activation under CO2 and N2 at 500-900 °C. Structural, magnetic, and surface characterizations were performed to evaluate their physicochemical properties and explore their potential for environmental applications, including the adsorption of cationic and anionic dyes. Activation at 700 °C significantly enhanced the material properties, particularly under N2, yielding a high specific surface area (241 m2 g-1), notable magnetization (27.4 emu g-1), and a low ID/IG ratio (0.42), indicative of graphitic domains. While CO2 activation led predominantly to magnetite formation, N2 favored the formation of iron carbide and zero-v

SUBMITTER: Nogueira GA 

PROVIDER: S-EPMC12368825 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature