Tunable stability of microwave plasma synthesized few-layer graphene dispersion in water
| Authors | |
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| Year of publication | 2024 |
| Type | Article in Proceedings |
| MU Faculty or unit | |
| Citation | |
| web | web konference |
| Keywords | graphene, microwave plasma, dispersion, water |
| Attached files | |
| Description | Formation of a stable dispersion of graphene in water is an important technological issue concerning both fundamental as well as applied research. Hydrophobic nature of graphene surface makes it very difficult to form stable dispersion of pure graphene, with high C/O atomic content ratio, in water without the use of surfactants. Up to now the most often used approach is the utilization of the graphene oxide (GO), oxidized formed of graphene with large quantities of carbon-oxygen/hydrogen related functional groups, which is well soluble in water/(surfactant) mixture. Such dispersion is applied to the selected surface and after liquid evaporation the reduction of the material to reduced graphene oxide is carried out. However, for the future large-scale applications, the use of dangerous chemicals as well as time and energy consuming processing steps should be minimized. Direct control of structural and chemical properties of few-layer graphene during its synthesis using microwave plasma decomposition of ethanol at atmospheric pressure enabled us to control and improve graphene dispersion stability in water providing important insights into the formation mechanism of such dispersions and simplifying preparation process of such dispersions. |
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