Enhanced photophysical and electrochemical properties of 2D layered rGO and MoS2 integrated polypyrrole (rGO-PPy-MoS2) composite

The integration of two-dimensional molybdenum disulfide (MoS2) and reduced graphene oxide (rGO) into a polypyrrole (PPy) matrix appears to be a productive method for improving the structural, optical, and electrochemical properties of pure PPy. rGO-PPy-MoS2 composite was synthesized via in-situ polymerization process. The formation of the composite was confirmed using Xray diffraction, Fourier transform infrared, and Raman investigations. Field emission scanning electron microscopy, transmission electron microscopy, and EDX were utilized to analyze the surface morphology and elemental analyses of rGO-PPy-MoS2 composite, because of their strong charge transport properties, the composites display both micro and meso-porosity with increased surface area. Elemental purity and composition of the synthesized materials were characterized through X-ray photoelectron spectroscopy. The optimized composites' band gap was 1.63 eV, with refractive index of 2.45 showed good optical conductivity and their photoluminescence characteristics reveal blue emission at 445 nm with color purity of 77.1%. The composite's electrochemical characteristics provide an excellent potential response in the 0-1 V range. The specific capacitance of rGO-PPy-MoS2 showed 235.6 F/g with maximum power density of 4300 W/kg and energy density of 11.61 Wh/kg. All of these findings point to rGO-PPy-MoS2 composite as a potential emissive layer material with suitable materials for supercapacitor application. [GRAPHICS] .