Facile synthesis of highly conductive PPy/graphene nanosheet /Gd 3+ composites

Abstract

Highly conductive PPy/graphene nanosheet and PPy/graphene nanosheet/Gd³⁺ composites were prepared via in-situ polymerization with p-toluenesulfonic acid as a dopant and FeCl₃ as an oxidant. The effects of graphene nanosheet obtained by two different synthetic methods and Gd³⁺ on the electrical conductivity of the composites were investigated. The results showed that the graphene nanosheet as a filler had an effect on the conductivity of PPy/graphene nanosheet similar to PPy/graphene nanosheet/Gd³⁺ composites, which played an important role in forming a conducting network in PPy matrix. Thermal gravimetric analysis demonstrated an improved thermal stability of PPy in the PPy/graphene nanosheet/Gd³⁺composites. The microstructures of PPy/graphene nanosheet/Gd³⁺ were characterized by scanning electron microscope and transmission electron microscope examinations.

Keywords

Graphene nanosheet polypyrrole composites

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