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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0002

    • Keywords

       

      Green synthesis; reduced graphene oxide; graphene oxide; Plectranthus amboinicus; supercapacitive performance.

    • Abstract

       

      A rapid, efficient, green and eco-friendly approach for the preparation of reduced graphene oxide (rGO) using Plectranthus amboinicus (Indian borage) leaves extract (PAE) is explored in this study. The improvement in the reduction process was studied by varying the concentration of graphene oxide (GO), temperature and time duration. The physical and chemical properties of rGO are studied using Raman spectroscopy, Fourier transform infrared spectroscopy, X-raydiffraction (XRD) and field emission scanning electron microscope. The result obtained from XRD analysis confirms the removal of an oxygen-containing functional group of GO significantly by PAE. Raman analysis showed a higher ID/IG ratio for rGO (1.297) than GO (1.07), which indicates a higher level of disorder in the rGO with a decrease in the average size of the sp$^2$ domain. From the electrochemical studies, a significant specific capacitance of 92.05 F g$^{–1}$ (5 mV s$^{–1}$) is obtained from the cyclic voltammetry (CV) curves and 73.20 F g$^{–1}$ (0.1 A g$^{–1}$) from the galvanostatic charge–discharge (GCD) curve.

    • Author Affiliations

       

      ROSE MARY DOMINIC1 2 PARTHIPAN PUNNIYAKOTTI1 BALAKRISHNAN BALAN1 SUBRAMANIA ANGAIAH1

      1. Electro-Materials Research Laboratory, Centre for Nanoscience and Technology, Pondicherry University, Puducherry 605014, India
      2. Department of Chemistry, Christ (Deemed to be University), Bengaluru 560029, India

    • Dates

       
      Published
      14 December 2021
      Manuscript received
      3 March 2021
      Accepted
      28 August 2021
      Final version published online
      14 December 2021

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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