Estimation of graphene layers number and defectiveness of few-layered graphene particles by Raman spectroscopy
- Authors: Goncharova N.N.1, Samoilov V.M.1, Elchaninova V.A.1, Nakhodnova A.V.1, Danilov E.A.1, Tarasov K.A.1
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Affiliations:
- NIIgraphite – Research and Development Institute of Graphite-Based Structural Materials
- Issue: Vol 9, No 2 (2024)
- Pages: 84-90
- Section: Original papers
- URL: https://journal-vniispk.ru/2782-2192/article/view/279620
- DOI: https://doi.org/10.17277/jamt.2024.02.pp.084-090
- ID: 279620
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Abstract
The purpose of the present work is to develop methods for assessing the quality of aqueous suspensions of few-layered graphenes using Raman spectroscopy technique. Aqueous suspensions of few-layered graphene particles were manufactured by direct exfoliation of natural graphite under with ultrasound in the presence of surfactants. An experimental assessment of the effectiveness of different methods of Raman spectroscopy data analysis in order to determine the average number of graphene layers and the defectiveness of few-layered graphene particles was carried out. It is concluded that it is possible to determine the average number of graphene layers in aqueous suspensions of few-layer graphene particles based on the ratio of integral intensities and the position of the G and 2D peaks. Additionally, it is proposed to use the ratio of the peaks of the integrated intensities of peaks D and G as a parameter characterizing the defectiveness of particles of few-layered graphenes. Examples are given of using this approach to assess the quality of graphene samples obtained using various technologies via averaged distribution functions of the number of layers in particles and the ID/IG ratio. It was shown that samples with minimal amount of layers had minimal particle size and high defectivity, while samples with higher number of layers had larger particle size with low defectivity.
About the authors
Nataliya N. Goncharova
NIIgraphite – Research and Development Institute of Graphite-Based Structural Materials
Email: NNiGoncharova@rosatom.ru
ORCID iD: 0009-0003-6722-1246
Head of the Laboratory
Russian Federation, 2, Electrodnaya St., Moscow, 111524Vladimir M. Samoilov
NIIgraphite – Research and Development Institute of Graphite-Based Structural Materials
Author for correspondence.
Email: VMSamoylov@rosatom.ru
ORCID iD: 0000-0002-9861-905X
D. Sc. (Eng.), Professor, Chief Researcher
Russian Federation, 2, Electrodnaya St., Moscow, 111524Viktoriya A. Elchaninova
NIIgraphite – Research and Development Institute of Graphite-Based Structural Materials
Email: viaelchaninova@rosatom.ru
ORCID iD: 0009-0006-3167-8924
Researcher
Russian Federation, 2, Electrodnaya St., Moscow, 111524Anastasiya V. Nakhodnova
NIIgraphite – Research and Development Institute of Graphite-Based Structural Materials
Email: AVNakhodnova@rosatom.ru
Cand. Sc. (Eng.), Head of the Testing Center
Russian Federation, 2, Electrodnaya St., Moscow, 111524Egor A. Danilov
NIIgraphite – Research and Development Institute of Graphite-Based Structural Materials
Email: egadanilov@rosatom.ru
ORCID iD: 0000-0002-1986-3936
Cand. Sc. (Chem.), Head of the Laboratory
Russian Federation, 2, Electrodnaya St., Moscow, 111524Konstantin A. Tarasov
NIIgraphite – Research and Development Institute of Graphite-Based Structural Materials
Email: KoATarasov@rosatom.ru
ORCID iD: 0009-0006-2942-6365
Engineer
Russian Federation, 2, Electrodnaya St., Moscow, 111524References
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