Novel Magnetic MnFeO-Decorated Graphite-Like Porous Biochar as a Heterogeneous Catalyst for Activation of Peroxydisulfate Toward Degradation of Rhodamine B.

A magnetic MnFeO-modified graphite-like porous biochar composite (MnFeO/KFS800) was synthesized by the hydrothermal method, and its catalytic activity was evaluated in the activation of peroxydisulfate toward degradation of Rhodamine B. After characterization by SEM, XRD, and the BET method, the specific surface area and total pore volume of the MnFeO/KFS800 catalyst reached 121 m/g and 0.263 m/g, and exhibited plate-like morphology with good crystallinity.