Synthesis of magnetic CoFeO/ordered mesoporous carbon nanocomposites and application in Fenton-like oxidation of rhodamine B.

CoFeO/ordered mesoporous carbon (OMC) nanocomposites were synthesized and tested as heterogeneous peroxymonosulfate (PMS) activator for the removal of rhodamine B. Characterization confirmed that CoFeO nanoparticles were tightly bonded to OMC, and the hybrid catalyst possessed high surface area, pore volume, and superparamagnetism. Oxidation experiments demonstrated that CoFeO/OMC nanocomposites displayed favorable catalytic activity in PMS solution and rhodamine B degradation could be well described by pseudo-first-order kinetic model.

[Heterogeneous Activation of Peroxymonosulfate with Three-dimensional Ordered Mesoporous CoO for the Degradation of Rhodamine B].

Three-dimensional ordered mesoporous CoO was prepared by nanocasting method with porous silicon KIT-6 as the hard template and firstly used to activate peroxymonosulfate for the degradation of rhodamine B. The structural properties were characterized by BET, H-TEM, XRD, XPS, FT-IR. The results showed that three-dimensional ordered mesoporous CoO presented far superior catalytic activity over conventional nanoscale CoO due to its abundant space mesoporous channel structure and the large specific surface areas.