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Research Article

Synthesis and characterization of high-quality multi layered graphene by electrochemical exfoliation of graphite

Bisma Ali1Adnan Qayoum1Shahid Saleem1Fasil Qayoom Mir2

1Mechanical Engineering Department, National Institute of Technology Srinagar, J&K, India-190006                                                     2Chemical Engineering Department, National Institute of Technology Srinagar, J&K, India-190006

Keywords

Abstract


Graphite;


Electrochemical exfoliation;


Graphene;


Intercalation;


Synthesis

Graphene is an emerging carbon material, with wide range of practical applications on a large scale. The yield and quality control of the resultant graphene are significant trade-offs in graphene production. The research is focused on fabricating high quality multi layered graphene using an electrochemical exfoliation approach by adjusting the electrolysis parameters, such as type, composition, concentration of electrolyte and DC Voltage. An aqueous solution of 0.3M (H2SO4) and 30% KOH has been used as an electrolyte. A constant DC voltage supply of +10 V has been incorporated for the electrolysis for investigation of the relationship between characterization and synthesis parameters. The structure, chemical properties and morphology of the synthesized graphene material were investigated using XRD, FTIR, Raman, UV-vis spectroscopy, FESEM, AFM and TEM/HRTEM techniques. FTIR spectrum showed the appearance of C-O and C-OH functional groups, along with C=C stretching of hexagonal network of graphene. The electronic transition of π-π* and n-π* are visible in UV-vis spectra of graphene. XRD pattern of graphene sample exhibits a characteristic peak at 2θ = 26.45, corresponding to a 3.412 Å interlayer distance. The development of multi-layered graphene was demonstrated by the shape and location of the 2D band in the Raman spectra. These studies reveal a comprehensive and detailed morphology showing the wrinkled layered surface with crumpled edges of few layer graphene. Further, this study reinforces the tremendous potential of electrochemical exfoliation for fabricating huge amounts of relatively perfect graphene structures for applications of practical importance.

© 2022 MIM Research Group. All rights reserved.

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8/12/2023 Special Issue: Embark on a journey of innovation with the journal of Research on Engineering Structures and Materials as we unveil a compelling opportunity for contributors in our upcoming special issue, "Design, Analysis, and Manufacturing of Composite Vehicle Structures." Led by distinguished Guest Editors Liubov Gavva and Oleg Mitrofanov from Moscow Aviation Institute. For more info see the link.


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27/12/2022 Reviewer AwardsThe winners of 2022 reviewer awards of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Reviewer Awards section. 


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LATEST AWARDS


2022 Reviewer Awards:

Please, visit Reviewer Awards section for the winners of the 2022 RESM reviewer awards.


2022 Best Paper Award:

The paper authored by Nitin Kumar, Michele Barbato, Erika L. Rengifo-López and Fabio Matta entitled as “Capabilities and limitations of existing finite element simplified micro-modeling techniques for unreinforced masonry” is awarded the 


2022 Most Cited Paper Award:

The paper authored by Aykut Elmas, Güliz Akyüz, Ayhan Bergal, Müberra Andaç and Ömer Andaç entitled as “Mathematical modelling of drug release" is awarded the


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