Ternary composites RGO/MoS2@Fe3O4: synthesis and enhanced electromagnetic wave absorbing performance

CoFe2O4 nanoparticles decorated MoS2-reduced graphene oxide nanocomposite for improved microwave absorption and shielding performance

“…24 Ideal MA materials should exhibit higher dielectric loss and magnetic loss, and their ratio should be around $1 for proper impedance matching for strong attenuation of EM energy inside the shield sample. 13 In Fig. 7c and f…”

“…The real value of complex permittivity (3 0 ) and permeability (m 0 ) represents the ability of a material to store incident EM energy through wave propagation, and the imaginary value of complex permittivity (3 00 ) and permeability (m 00 ) expressed as the ability of a material to attenuate more EM energy within the medium. 13,14 In Fig. 7a and b, the real (3 0 ) and imaginary permittivity (3 00 ) decrease with increased frequency in the tested region.…”

“…These materials exhibit many essential properties, such as a low density, light weight, thinness, high electrical conductivity, large surface area, wide absorption efficiency range, and good thermal and chemical stability. [10][11][12][13][14][15] However, superior MA shielding materials should exhibit a good impedance matching condition, in which the relative permittivity (3 r ), and permeability (m r ) of the material are of the same magnitude. 16,17 According to the classical EM theory, the MA properties of materials are largely affected by dielectric and magnetic losses.…”

Simple and Fast Approach for Synthesis of Reduced Graphene Oxide–MoS2 Hybrids for Room Temperature Gas Detection

“…These all of the diffraction peaks can be well indexed to the hexagonal phase of MoS 2 (Joint Committee on Powder Diffraction Standards No. 37-1492) [3], [44]. The small and broad diffraction peak of rGO NSs at 2θ = 25.2°c orresponding to (002) plane can be seen in the rGO-MoS 2 hybrids, suggesting the presence of rGO NSs in hybrids.…”

Controlled hydrothermal temperature provides tunable permittivity and an improved electromagnetic absorption performance of reduced graphene oxide

“… 9 This phenomenon not only limits the EA performance of the composites, but also makes the incident electromagnetic waves more likely to reflect off the surface of the composite. In order to remedy this defect, multi-component composites have been considered to decorate RGO to achieve ideal EA performances, such as ZnO, 10 MoS 2 , 11 NiFe 2 O 4 , 12 MoS 2 @Fe 3 O 4 , 13 CoNi@SiO 2 , 14 and V 2 O 5 /carbon nanotubes (CNTs). 15 …”