Synthesis of graphene from ethanol decomposition by atmospheric microwave plasma
María Dolores Calzada
Laboratorio de Innovación en Plasmas
Universidad de Córdoba
Abstract: During the last years, the interest of the scientific community in the graphene, has increased considerably due to its wide range of applications in fields such as electronic, catalysis, energy storage and composite materials; applications that are based on the novel electrical and mechanical properties of this material. For the graphene production, Chemical Vapor Deposition (CVD) and Liquid Phase Exfoliation (LPE) are techniques suitable for its production. However, both procedures present several limitations such as the need of complementary treatment to extract graphene from the substrate or the solvent and the use of harmful catalysts which increase the number of defects of the synthesized material.
Recently, microwave plasmas have been reported as efficient, clean and environmentally friendly tool for the synthesis of catalyst-free graphene by using ethanol as carbon sources. These plasmas can operate at relativity low powers (< 1 kW), presenting high stability and reproducibility within a wide range of operational conditions. Furthermore, the possibility of generating at atmospheric pressure, make them an economic and attractive technique for implementation of the processes at industrial scale, reducing the production costs.