AbstractIn this paper, a novel adsorbent of magnetic mesoporous carbon microspheres (MCS) are prepared by template methods and using nano‐Fe3O4 particles as magnetic cores, and the adsorption capacity and mechanism are studied in detail. The results show that MCS exhibits high performance for removing malachite green (MG), the highest adsorption capacity can reach about 468.5 mg g−1. Furthermore, the Langmuir adsorption isotherm model and the quasi‐second‐order kinetic model can explain the experimental phenomena very well. And the high a...