Morphology-controllable synthesis of polyurethane-derived highly cross-linked 3D networks for multifunctional and efficient electromagnetic wave absorption

The morphology modulation of multi-level structures and the multifunctional design of their composites are challenging research priorities in the field of electromagnetic wave absorption. In this work, the abandoned polyurethane is adopted as a sacrificial template of a three-dimensional carbon network. The morphology-controlled Fe/Fe2O3@porous carbon composites with highly cross-linked 3D structures are synthesized by simple hydrothermal and...