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Title: | Polymer-Free Transfer Of Graphene-Based Material Derived From Cooking Palm Oil By Chemical Vapour Deposition Technique |
Authors: | Azzafeerah Mahyuddin Ismail A.K. Omar M.F. Ainul Hakimah Karim. (UniKL MITEC) |
Keywords: | chemical vapour deposition graphene polymer-free transfer |
Issue Date: | 16-Jul-2023 |
Abstract: | Chemical vapour deposition (CVD) of cooking palm oil precursors with a nickel (Ni) catalyst is an established method to produce graphene-based materials. Nonetheless, transferring the graphene sheets from the substrate surface to a selected target substrate presents a major challenge. The utilisation of well-known poly (methyl methacrylate) (PMMA)-assisted graphene transfer promotes defects, impurities, folds, and wrinkles in the graphene sheets, thus affecting its properties. Consequently, the present study demonstrated a polymer-free graphene sheets transfer technique on a Ni substrate derived from cooking palm oil. A dropwise hexane layer substituted the PMMA supporting layer during the etching process to remove the Ni substrate. The quality of the graphene sheet was investigated with optical microscopy by employing a Leica DM1750 M microscope, scanning electron microscopy (SEM) with a Hitachi S-3400N, and Raman spectroscopy utilising a UniDRON automated microscope Raman mapping system with 514 nm laser excitation. Resultantly, macroscopically clean and crack-free graphene sheets were was obtained. Furthermore, the technique was less complicated than the PMMA-assisted transfer technique. The Raman spectra of the polymer-free method also revealed visible graphene peaks, which was absent in the PMMA-transferred samples. © 2022, Malaysian Society of Analytical Sciences. |
URI: | http://hdl.handle.net/123456789/28129 |
Appears in Collections: | Journal Articles |
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6 Polymer-Free Transfer Of Graphene-Based Material Derived From Cooking Palm Oil By Chemical Vapour Deposition Technique.pdf | 34.52 kB | Adobe PDF | View/Open |
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