Chan, Yi Lin and Esa, Fahmiruddin and You, Kok Yeow and Sim, Man Seng (2022) The effect of pH on particle size of hydrothermally reduced graphene oxide. In: Proceedings of the 7th International Conference on the Applications of Science and Mathematics 2021 Sciemathic 2021. Springer Proceedings in Physics, 273 (NA). Springer Science and Business Media Deutschland GmbH, Singapore, pp. 65-72. ISBN 978-981168902-4
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Official URL: http://dx.doi.org/10.1007/978-981-16-8903-1_7
Abstract
The reduction of graphene oxide (GO) was previously carried out using chemical reducing agents hydrazine, dimethyl sulfoxide (DMSO) and sodium borohydride (NaBH4). These chemical agents endanger the environment and cause reduced graphene oxide (RGO) sample to form aggregation. In this paper, RGO samples were prepared using hydrothermal synthesis under different pH mediums (pH = 4, 7 and 11). The effects of pH value on surface morphology, chemical compositions and particle sizes were investigated using field emission scanning electron microscope (FESEM), fourier transform infrared (FTIR) and Malvern Zetasizer Nano ZS. FESEM shows RGO samples present in nanosheets and wrinkled structures. FTIR indicates that the characteristic peaks of RGO are in minimum value at different pH values. Particle sizes of RGO samples prepared in different pHs vary from 344.0 nm to 751.1 nm. The particle sizes of RGO samples decrease with increasing of pH value due to electrostatic repulsion on the graphene sheets.
| Item Type: | Book Section |
|---|---|
| Uncontrolled Keywords: | hydrothermal sysnthesis, particle size, pH, reduced graphene oxide |
| Subjects: | Q Science > Q Science (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering - School of Electrical |
| ID Code: | 102213 |
| Deposited By: | Yanti Mohd Shah |
| Deposited On: | 09 Aug 2023 08:31 |
| Last Modified: | 09 Aug 2023 08:31 |
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