Nickel nanoparticle–decorated reduced graphene oxide via one-step microwave-assisted synthesis and its lightweight and flexible composite with Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene polymer for electromagnetic wave shielding application

Abstract Nickel nanoparticle–decorated reduced graphene oxide nanocomposites (NiG) were prepared by a one-step microwave-assisted solvothermal method. The as-prepared NiG nanocomposite systems further heated up to 800 °C under an inert atmosphere (named NiG-800) modify their structural and electromagnetic properties. Thereafter, these developed NiG-800 of rGO nickel nanoparticles (25 wt.%) applied as nanofillers (50 wt.% 70 in SEBS (Polystyrene- block -poly(ethylene- ran -butylene)- -polystyrene) polymer matrix create NiG-800(50)-SEBS NiG-800(70)-SEBS nanocomposites. addition led increase Young’s modulus from 16 (SEBS) 35 MPa (NiG-800(70)-SEBS) while the maximum elongation is still around 300%. exhibited high-performance wave absorption (minimum reflection loss RL min ≈ –48.2 dB at 9.29 GHz) low thickness 2.3 mm frequency range 8.2−12.4 GHz. has potential absorber. reported here total shielding efficiency > 10 1 whole (X-band) with 50% 40% which for absorber applications.