Synthesis of polyaniline-gold/graphene oxide composite and microwave absorption characteristics of the composite films

This paper describes the synthesis of polyaniline-gold nanocomposite by an in situ polymerization of aniline hydrochloride with graphene oxide using hydrogen tetrachloroaurate as an oxidant. The synthesized nanocomposites were characterized by FT-IR and UV–vis spectroscopy, and their surface morphology was studied by scanning and transmission electron microscopy. Microwave absorption property of the composite films was studied at 2–12 GHz, and the effects of sample thickness on the microwave absorption were investigated. The electromagnetic interference shielding effectiveness of PANI-GNP has been enhanced due to the inclusion of GO.

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► Polyaniline-gold nanocomposite including graphene oxide (GO) was synthesized.
► The composites were characterized by spectroscopic and morphology study.
► Microwave absorption property of the composite films was studied at 2–12 GHz.
► Electromagnetic interference shielding effectiveness of PANI-GNP was enhanced by GO.