Comparative Study and Characterization of Reduced Graphene Oxide (RGO) and Porous Reduced Graphene Oxide (P-RGO) Based on Coconut Shell Waste

• Published in: Journal of Nano- and Electronic Physics Vol. 13; no. 6
• Main Authors: Samnur, Azizah, N, Fahira, N, Zurnansyah, Zabrian, Dirfan, Zharvan, V, Sujiono, E H
• Format: Journal Article
• Language: English
• Published: Sumy Ukraine Sumy State University, Journal of Nano - and Electronic Physics 01.01.2021
• Subjects: Comparative studies; Crystal structure; Energy gap; Energy value; Fourier transforms; Functional groups; Graphene; Infrared spectroscopy; Optical properties; Synthesis
• ISSN: 2077-6772; 2306-4277
• DOI: 10.21272/jnep.13(6).06017

RGO and P-RGO samples based on coconut shell waste have been synthesized by exfoliation method. These samples were characterized using XRD, FTIR, and UV-Visible spectroscopy to obtain their crystal structure, functional group and optical properties. XRD results of the RGO and P-RGO samples show two peaks that are similar to those of RGO and P-RGO synthesized from pure (commercial) graphite. FTIR characterization of the RGO sample shows the hydroxyl (–OH), aromatic (–C(C), epoxy (C–O) and alkoxy (C–O) functional groups at 3449.39, 1627.63, 1216.58 and 1045.88 cm – 1, respectively. Meanwhile, the ?P-RGO sample shows the hydroxyl (–OH), aromatic (C ( C) and epoxy (CO) functional groups formed at 3450.51, 1628.02 and 1229.14 cm – 1, respectively. In addition, UV-Visible results for RGO and P-RGO show sufficient optical performance. The band gap energy values of the samples obtained using the Tauc plot method are 3.50 eV and 4.41 eV, indicating the semiconductor properties.