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Defected graphene nano-platelets for enhanced hydrophilic nature and.pdf
Journal of Physics and Chemistry of Solids (2017)
  • Mohammad Mansoob Khan, Dr
  • Mohammad Ehtisham Khan, School of Chemical Engineering Yeungnam University
  • Moo Hwan Cho
Abstract
This paper reports an optimized electron beam irradiation (60 kGy and 90 kGy) approach for defects-related engineering of graphene nano-platelets for optical and structural properties dependent photoelectrochemical performances. The defects in the electron beam irradiated pristine graphene nano-platelets were studied, analyzed and confirmed using standard characterization techniques such as, diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), high resolution-transmission electron microscopy (HR-TEM) and contact angle measurements. DRS clearly revealed the increment in the absorption band using electron beam irradiation doses of 60 kGy and 90 kGy. Contact angle measurements confirm the additional hydrophilic nature of the defects engineered graphene nano-platelets in comparison with pristine graphene. The photoelectrochemical performances such as linear sweep voltammetry and electrochemical impedance spectroscopy further confirms the enhancement in the optical, spectroscopic, and photoelectrochemical properties of the 90 kGy defected graphene in comparison to pristine graphene nano-platelets. Therefore, the proposed method is a reliable way of fine-tuning the properties (optical, spectroscopic and photoelectrochemical) of pristine graphene nano-platelets using electron beam irradiation for enhanced photoelectrochemical performance.
Keywords
  • Graphene,
  • Defected graphene
Publication Date
January 24, 2017
DOI
http://dx.doi.org/10.1016/j.jpcs.2017.01.027
Citation Information
Mohammad Mansoob Khan, Mohammad Ehtisham Khan and Moo Hwan Cho. "Defected graphene nano-platelets for enhanced hydrophilic nature and.pdf" Journal of Physics and Chemistry of Solids (2017) p. 233 - 242
Available at: http://works.bepress.com/mmansoob_khan/74/
Creative Commons license
Creative Commons License
This work is licensed under a Creative Commons CC_BY-SA International License.