Enhanced electromagnetic shielding behaviour of multilayer graphene anchored luminescent TiO2 in PPY matrix

Abstract

Present research is focussed on the development of a novel composite material for highly-efficient absorption of electromagnetic interference (EMI) pollution. Herein, we report synthesis and characterization of polypyrrole (PPY) composite containing multi-layered graphene (MLG) anchored with titanium dioxide (TiO2) via in-situ oxidative polymerization of pyrrole. The tuning of the microwave signals has achieved via composites with different weight ratios of MLG and TiO2. The maximum Total shielding effectiveness (SET), 53 dB was observed for PPY/MLG/TiO2 (5% composite) in the frequency range of 12.4-18 GHz. The observed results suggest that the composite material could be a new alternative for building block of electromagnetic shielding applications