METHOD AND APPARATUS FOR MANUFACTURING COLLOIDAL CARBON NANOPARTICLES HOMOGENEOUSLY DISPERSED IN AQUEOUS SOLUTION

摘要

A high purity of stable carbon colloid is manufactured under a condition of atmospheric pressure and room temperature. A method of manufacturing colloidal carbon nanoparticles homogeneously dispersed in water or aqueous solution includes preparing an electrolytic cell having a carbon oxidization electrode and an opposite electrode, the electrolytic cell containing an electrolyte and carbon, and performing electrolysis of the carbon by applying electricity between the carbon oxidization electrode and the opposite electrode for 20 to 500 hours in a constant voltage mode or in a constant current mode to sustain a current density of the carbon oxidization electrode in 3 to 20mA/cm2, so that the carbon in the electrolytic cell is oxidized and finely split and a carboxyl group is produced on a surface of the carbon.