Solution plasma process (SPP) was applied for the synthesis of carbon nanoparticles. SPP is the plasma process occurred in an aqueous solution. The application of electrical discharge in liquid has been studied for many years. The high voltage electrical discharge directly in liquid initiates both chemical and physical processes. It has been demonstrated to produce various radicals and ions depended on the choice of the solution. Previous studies showed the technique was capable of synthesis nanoparticles, including nanocolloidal particles, metal nanoparticles and carbon-rated materials, successfully [26-28]. Compared to the conventional methods, the process is superior to others in terms of the ease of handling, operation under atmospheric pressure and temperature and relatively short consumption time.
In this study, carbon nanoparticles were synthesized by solution plasma process. Based on the previous studies, two different types of organic solution, including sugar and aromatic hydrocarbon solution, were chosen as the carbon precursor. Glucose, sucrose and fructose were used as the representative of sugar solution, whereas liquid benzene and toluene were used as the carbon source in aromatic hydrocarbon solution.ar.