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Journal article
Quantifying the Stability-defect-layer Trade-off in Surfactant-assisted Fluid-dynamic Exfoliation of Few-layer Graphene
Periodica polytechnica. Chemical engineering, Vol.69(4), pp.632-648
2025
Abstract
In this paper we report an all-aqueous fluid-dynamic exfoliation route to low-defect few-layer graphene (FLG) using the non-ionic surfactant Triton X-100. Systematic variation of surfactant concentration (1-5 wt%) and processing time (0.5-1.5 h) revealed a quantitative interplay among stability, defect, and layer. Raman spectroscopy and 2D band Lorentzian modeling revealed that the few-layer graphene (FLG) predominantly consists of four layers, with very low defect ratios (I-D/I-G = 0.02-0.11; I-2D/I-G = 0.18-0.30). Raman imaging confirmed spatially uniform G band intensity, while the edge-activated D band signals indicated residual edge defects characteristic of shear-cleaved flakes. Transmission electron microscopy and particle size analysis yielded lateral sizes of similar to 1.29-1.43 mu m with a narrow distribution. Fourier transform infrared spectroscopy verified that the defects were not oxidation-derived, while UV-Vis showed graphene Ti-Ti absorption at 270-276 nm. This work establishes a short-duration, low-cost, and solvent-free approach for producing stable FLG suitable for liquid-phase applications and provides process-structure metrics for benchmarking across exfoliation studies.
Details
- Title
- Quantifying the Stability-defect-layer Trade-off in Surfactant-assisted Fluid-dynamic Exfoliation of Few-layer Graphene
- Authors/Creators
- Amun Amri - Riau UniversityDeki Sarma - Univ Riau, Fac Engn, Dept Chem Engn, Bina Widya Campus KM 12 5, Pekanbaru 28293, IndonesiaPanca Setia Utama - Riau UniversityDhina Febryza - Riau UniversityMohammednoor Altarawneh - Professional Beef ServicesKhairulazhar Jumbri - Universiti Teknologi PetronasHatem Taha - Murdoch UniversityHussein A. Miran - University of BaghdadZainab N. Jaf - University of BaghdadMohammad Mahbubur Rahman - Jahangirnagar UniversityMazhibayev Assylzhan - Taraz Univ M Kh Dulaty, Fac Technol, Dept Chem & Chem Technol, Taraz 080000, KazakhstanZhong Tao Jiang - Murdoch University, Centre for Water, Energy and Waste
- Publication Details
- Periodica polytechnica. Chemical engineering, Vol.69(4), pp.632-648
- Publisher
- Budapest Univ Technology Economics
- Number of pages
- 17
- Grant note
- 20687/UN19.5.1.3/AL.04/2024 / Ministry of Education, Culture, Research, and Technology Republic of Indonesia via the Riset Terapan scheme
- Identifiers
- 991005849988507891
- Murdoch Affiliation
- Centre for Water, Energy and Waste; Surface Analysis and Materials Engineering Research Group
- Language
- English
- Resource Type
- Journal article
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