Enhanced electromagnetic wave absorption of Fe3O4@C derived from spindle-like MOF

Summary: Biomass-derived carbon absorbing materials have attracted extensive attention due to their diverse structures, wide sources, and low cost. However, constructing efficient biomass-based absorbers with hierarchical and multi-component micro-nanoarchitecture remains a great challenge. In this study, a novel Co@mesoporous C/macroporous C sheet hybrid was successfully prepared, which exhibited a unique 3D micro-nanostructure with larger specific surface area, rich heterogeneous interfaces, massive defects, and multi-level porosity.