NiS?@MoS? Nanospheres Anchored on Reduced Graphene Oxide: A Novel Ternary Heterostructure with Enhanced Electromagnetic Absorption Property.

ABSTRACT: For the purposes of strength, military equipment camouflage, and protecting the health of organisms, electromagnetic wave absorbing materials have received a lot of attention and are widely studied. In addition to having a strong absorption intensity and a wide effective absorption bandwidth, materials that are lightweight, thermally stable, and antioxidative are also highly desirable. In this study, we fabricated core?shell structured NiS?@MoS? nanospheres anchored on reduced graphene oxide (rGO) nanosheets (NiS?@MoS?/rGO) by a simple two-step hydrothermal method. The combination ratio was adjusted to achieve proper impedance matching. The electromagnetic parameters and the absorption performance were investigated in detail. A composite loaded with 30 wt.% of the sample achieved a minimum reflection loss (RL) value of -29.75 dB and the effective bandwidth (RL value of less than -10 dB) ranged from 4.95 GHz to 18.00 GHz (13.05 GHz), with a thickness ranging from 1.5 mm to 4.0 mm. This study proved that the generated significant interfacial polarization and synergetic interaction between components can result in NiS?@MoS?/rGO composites with enhanced electromagnetic absorption performance.

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC6410035 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature