Layer by layer 2D MoS2/rGO hybrids: An optimized microwave absorber for high-efficient microwave absorption

Abstract Constructing heterostructured microwave absorbers out of low dimensional nanomaterials has been proved an effective method for enhancing the attenuation ability and boarding the effective attenuation bandwidth in electromagnetic wave (EMW) absorbing area. By using a simple intermediate reduction mixing process, 2D layer by layer hierarchical architectures of few-layered MoS2 nanosheets (NMS) and reduced graphene oxide (rGO) are prepared under different volume ratios, which achieve enhanced EMW absorption performance with respect to the pure NMS or rGO. The minimum reflection loss (RL) value of NMS/rGO-5:1 with 20 wt% loading is −55 dB under 2.2 mm compared to −38.42 dB of pure NMS with 60% loading under 2.4 mm or −37.2 dB of pure rGO with 30% loading under 3.5 mm. The effective attenuation bandwidth (EAB,