Polypyrrole coated graphene nanoplatelets and the effect of rare earth ions with nanocomposites

PPy/graphene/rare earth ions (PPy/GR/La3+, PPy/GR/Sm3+, PPy/GR/Eu3+, PPy/GR/Gd3+ and PPy/GR/Tb3+) are fabricated via in-situ polymerization using p-toluenesulfonic acid as a dopant and FeCl3 as an oxidant. The surface morphology of the PPy/GR/La3+, PPy/GR/Sm3+, PPy/GR/Eu3+, PPy/GR/Gd3+ and PPy/GR/Tb3+ composites were characterized by using transmission electron microscopy. The maximum conductivity of PPy/GR/La3+, PPy/GR/Sm3+, PPy/GR/Eu3+, PPy/GR/Gd3+ and PPy/GR/Tb3+ composites found with 1 wt.% GR and 2 wt.% La3+, Sm3+, Eu3+, Gd3+ and Tb3+ at room temperature.