Vol. 21 No. 2 (2022): Mapana Journal of Sciences
Research Articles

Role of Defects in the Band Gap Tailoring of Carbon Black

  • Elma Elizaba Mathew,
  • Manoj Balachandran
Elma Elizaba Mathew
CHRIST (Deemed to be University), Bangalore, Karnataka, India
Manoj Balachandran
CHRIST (Deemed to be University), Bangalore, Karnataka, India
DOI: https://doi.org/10.12723/mjs.62.1

Published 2023-01-18

Versions

Keywords

  • Carbon Black,
  • Band-Gap,
  • Defects,
  • Amorphous

Copyright (c) 2023

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Abstract

With the rise in the need for cost-effective production of graphene-like systems, Carbon Black (CB) is found to be a potential candidate. This report presents the structural modification of Carbon Black (CB) subjected to hydrothermal exfoliation at various temperatures. X-ray diffraction (XRD) revealed the graphitic structure with a broad peak, indicating the amorphous nature regardless of the variation in temperatures. Raman spectroscopy revealed that defect intensity increased with the increase in temperature. The band-gaps are found to be 4eV, 2.95eV, 2.86eV and 2.21eV at the exfoliation temperatures 160⁰C,180⁰C,200⁰C and 220⁰C respectively exhibiting a lowering with rise in temperature.   

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