One-step facile synthesis of MoS2 - reduced graphene oxide/ZnO nanostructure for high-performance microwave absorption

• Published in: Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2023-07, Vol.293, p.116450, Article 116450
• Main Authors: Singh, Ashwani Kumar, Prasad, Jagdees, Kumar, Ajit, Srivastava, Amit, Tyagi, Uday P., Prajapati, Brijmohan, Singh, Kedar
• Format: Article
• Language: English
• Subjects: EMI Shielding; Graphene; Impedance matching; Nanostructure. Dielectric; Solvothermal synthesis
• ISSN: 0921-5107; 1873-4944
• DOI: 10.1016/j.mseb.2023.116450

•Herein, a first report on the MoS2-rGO/ZnO nanocomposite by one-step hydrothermal synthesis method.•MoS2-rGO/ZnO nanocomposite shows higher electrical conductivity and dielectric loss parameter than pure MoS2-rGO nanocomposite.•Most of the electromagnetic energy attenuated by MoS2-rGO/ZnO nanocomposite due to the decrease in the transmittance value.•Synthesis is much simpler and safer, without any hazardous tail gas or reagents involved. The tremendous development in electronic devices and their prolific implications have triggered a serious threat to our ambiance in form of electromagnetic interference (EMI) pollution. The present study manifests a feasible approach to design an alternative architecture of graphene-based material for improving the shielding performance through absorption in X-band frequency array. The MoS2-rGO/ZnO ternary nanostructure has been synthesized through a simplistic solvothermal approach. The studies suggest that the MoS2-rGO/ZnO ternary nanocomposite exhibits outstanding EM wave absorption and dissipation capabilities as compared to its constituent components. The average EMI SET (∼32 dB) of the studied MoS2-rGO/ZnO nanocomposite owes to the combined effects of various relaxations and polarizations of ZnO and MoS2-rGO. The synergic effect, as well as dielectric and magnetic losses, furnish the high shielding effectiveness. The incorporation of ZnO nanoparticles in MoS2-rGO nanocomposite results in a spectacular average value of EMI SET, making it appropriate for widespread applications.