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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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09/03/2022 Outstanding Reviewer Award: The reviewers are the anonymous heroes of the publishing society. Reviewing manuscripts is not an easy task but it is critical to the advancement of scientific knowledge. Even if authors take credit for publishing papers, the recognition of the reviewers are highly limited for their work. Therefore, our journal announces the reviewers that participated in editorial processes of the submitted articles in a yearly basis. Now, we expand our efforts to appreciate the valuable contribution of our reviewers and start to give Outstanding Reviewer Awards.


More info can be found at Reviewer Awards section. 


29/12/2021 Best Paper Award: According to the Advisory Board decision, the paper authored by Sahar Ismail, Wassim Raphael, Emmanuel Durand entitled as “Case study of the Beirut port explosion using 3D laser scan and nonlinear finite element model” is awarded the 2021 Best Paper Award of Research on Engineering Structures and Materials (RESM). We congratulate the authors and wish them a continued success.  



29/12/2021 Most Cited Paper Award: According to the Editorial Board evaluation, the paper authored by Sinan Kutluay, Orhan Baytar, Ömer Şahin entitled as “Adsorption kinetics, equilibrium and thermodynamics
of gas-phase toluene onto char produced from almond shells" is awarded the 2021 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM). We congratulate the authors and wish them a continued success.


(More details of the news may be given in the News section)


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LATEST AWARDS


2021 Best Paper Award:

The paper authored by Sahar Ismail, Wassim Raphael, Emmanuel Durand entitled as “Case study of the Beirut port explosion using 3D laser scan and nonlinear finite element model” is awarded the 



2021 Most Cited Paper Award:

The paper authored by Sinan Kutluay, Orhan Baytar, Ömer Şahin entitled as “Adsorption kinetics, equilibrium and thermodynamics of gas-phase toluene onto char produced from almond shells" is awarded the


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28.09.2022

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