One-dimensional self-assembled PANI@MnO₂/GNs materials with remarkable absorbing properties

In this experiment, the polymerization of aniline on the surface of one-dimensional self-assembled MnO₂/GNs through basic ice bath stirring was used to modify MnO₂/GNs with polyaniline. By adjusting the reaction duration, pH, and aniline concentration, the morphology, structure, and microwave absorption characteristics of PANI@MnO₂/GNs composites were systematically investigated. The results show that the PANI@MnO₂/GNs nanomaterials composited with polyaniline maintain the oriented structure of MnO₂/GNs and have excellent microwave absorption properties. The minimum reflection loss (RL_min) reached −65.1 dB at a thickness of 2.9 mm, which is two times higher than the RL_min of MnO₂/GNs composites synthesized under the same conditions. Good impedance matching, an orientated structure, and exceptional dielectric properties accounted for the excellent microwave absorption properties. A novel method for the modification of MnO₂ composites for applications is offered by the PANI@MnO₂/GNs created in this work.