Synthesis and identification of structural, optical, electrical, magnetic, photocatalytic, and electrochemical properties of novel Au/MoS2@(NiFe2O4)x nanocomposites

Because of its high specific surface area, dielectric loss, and exceptional electronic properties brought on by polymorphism, MoS2 have recently emerged as a promising candidate for electromagnetic wave absorbers. However, the performance of one MoS2 was constrained by its poor impedance matching, and one absorption mechanism is no longer sufficient to satisfy the search for novel absorbers. To effectively attenuate electromagnetic waves, absorber impedance matching can be optimized. In this study, we used the sol-gel method to incorporate Au and amorphous NiFe2O4 magnetic nanoparticles into the MoS2 nanosheets in order to improve their low impedance and improve interfacial polarization under the cooperative interaction of dielectric and magnetic loss. This study also demonstrated that these samples can function as optical sensors with interdigitated electrodes. According to this research, interfacial polarization and impedance matching optimization of the MoS2 based nanocomposites play important roles in the electromagnetic response, and appropriate impedance matching optimization allows control of the strong absorption intensity and high-performance absorbers. [Display omitted] •Au/MoS2@(NiFe2O4)x nanocomposites were synthesized by sol-gel method.•These samples can function as optical sensors with interdigitated electrodes.•These samples exhibit high, stable, and remarkable electrical, magnetic, and photocatalytic activity.•Au/MoS2@(NiFe2O4)x nanocomposites is a promising candidate for the low-frequency frame EM sensors and absorbers.