Facile synthesis of highly conductive PPy/graphene nanosheet /Gd³⁺ composites

Abstract

Highly conductive PPy/graphene nanosheet and PPy/graphene nanosheet/Gd 3þ composites were prepared via in-situ polymerization with p-toluenesulfonic acid as a dopant and FeCl 3 as an oxidant. The effects of graphene nanosheet obtained by two different synthetic methods and Gd 3þ 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/Gd 3þ 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/Gd 3þ composites. The microstructures of PPy/graphene nanosheet/Gd 3þ were characterized by scanning electron microscope and transmission electron microscope examinations.

Electrochemical Synthesis and Characterization of Flavin Mononucleotide‐Exfoliated Pristine Graphene/Polypyrrole Composites

“…Different attempts have been carried out to obtain graphene‐polypyrrole (G‐PPy) composites, trying to take advantage of the best characteristics of both components. In this regard, G‐PPy composites have been obtained so far through chemical polymerization, liquid‐liquid interfacial polymerization, using templates to obtain nanoparticles or nanowires of a specific shape, as an aerogel or through electrochemical polymerization . In most of these previous works, graphene was obtained via the graphite oxide route, which involves treatment of a parent graphite with harsh acids and oxidizing agents to afford graphene oxide nanosheets that are subsequently reduced by chemical or other means.…”

Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al2O3 hybrid nanocomposites

“…1 –4 Among them, an interesting choice to the conducting polymer is PPy due to its unchallenging mode of synthesis (when compared with PANI, PIN, and PT), slender weight, and enormous biocompatibility as well as environmental stability. 5,6 However, the deficiency of the mechanical, electrical, and thermal stabilities makes PPy unhandy for many industrial applications. The evolution of PPy-inorganic hybrid material nanocomposites is a solution to address these problems.…”

Preparation and characterization of high-performance polyamic acid salt hydrogel in aqueous solution

“…The first network is densely cross-linked to preserve shape, and the second network is loosely cross-linked and dissipates the energy that is applied to the gels. [12][13][14] In nanocomposite hydrogels, polymer chains of different lengths are attached to two adjacent polyfunctional cross-linkers; long chains maintain the elasticity of the hydrogel, and short chains are used for energy dispersion. 15,16 Supramolecular hydrogels, also known as "reversible hydrogels," feature secondary interactions, such as H bonding, ionic bonding, and hydrophobic interactions.…”