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Enhanced photophysical and electrochemical properties of 2D layered rGO and MoS\(_2\) integrated polypyrrole (rGO-PPy-MoS\(_2\)) composite

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Abstract

The integration of two-dimensional molybdenum disulfide (MoS\(_2\)) 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-MoS\(_2\) composite was synthesized via in-situ polymerization process. The formation of the composite was confirmed using X-ray 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-MoS\(_2\) 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-MoS\(_2\) 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-MoS\(_2\) composite as a potential emissive layer material with suitable materials for supercapacitor application.

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The datasets generated during and/or analyses during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors would like to express their gratitude to the Indian Institute of Technology (Indian School of Mines) Dhanbad, Jharkhand, India, for providing the research facilities. The authors would also like to thank Indian Institute of Technology Bombay for providing characterization facility.

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  1. Nanostructured Composite Materials Laboratory, Department of Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, 826004, India

    Debashish Nayak & Ram Bilash Choudhary

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Conceptualization, methodology, formal analysis and investigation, and writing (Original draft preparation) performed by Debashish Nayak. Review and editing and supervision performed by Ram Bilash Choudhary.

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Correspondence to Ram Bilash Choudhary.

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Nayak, D., Choudhary, R.B. Enhanced photophysical and electrochemical properties of 2D layered rGO and MoS\(_2\) integrated polypyrrole (rGO-PPy-MoS\(_2\)) composite. J Mater Sci 58, 9160–9180 (2023). https://doi.org/10.1007/s10853-023-08572-7

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