Volume 18, Issue 2 (June 2021)                   IJMSE 2021, 18(2): 1-12 | Back to browse issues page


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Karimi S, Heidarpour A, Ghasemi S. Structural and Morphological Characterization of the Expanded Graphite Obtained by Ball Milling and HF Leaching. IJMSE 2021; 18 (2) :1-12
URL: http://ijmse.iust.ac.ir/article-1-2131-en.html
Abstract:   (7830 Views)
In this research, expanded graphite (EG) was successfully fabricated using a simple ball milling process followed by hydrofluoric (HF, 10 wt. %) leaching. The effects of ball milling time (0-15 h) and leaching time (1-24 h) on the exfoliation of graphite were examined by XRD and Raman spectra. Furthermore, the morphological evaluation of the obtained expanded graphite samples was carried out by scanning electron microscopy (SEM). The XRD results of the ball-milled and HF treated samples showed a slight peak shift and broadening of (002) plane for expanded graphite compared to the precursor and HF-treated samples. Moreover, the intensity of the (002) planes remarkably decreased by the ball milling process but remained constant after HF treatment. Raman spectra of the samples confirmed the ordering process only in HF-treated specimens. Moreover, the intensity ratio of 2D1 to 2D2 band gradually increased with enhancing the HF treatment time up to 5 hours, indicating a decrement in the number of graphite layers by leaching in the HF solution.
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Type of Study: Research Paper | Subject: Ceramics

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