▎ 摘　　要

NOVELTY - Method for providing synthesis of graphene quantum dots, involves: depositing a predefined quantity of graphene oxide (GO) on a glassy carbon electrode (GCE) using a microtip; performing an electrochemical oxidation of the GO deposited on the GCE at a predefined voltage, where the electrochemical oxidation is performed in a three-electrode system and with a preselected electrolyte, and the electrochemical oxidation is performed at one or more oxidation time intervals; and fixing a potential to a predefined fixing value for a predefined time for obtaining size tunable graphene quantum dots (GQD). USE - The method is used for synthesis of GQD which is used for humidity sensors, chemical sensors, nanoelectronic devices and biomarkers. The GQD is used as sensors for measuring soil moisture. The GQD is used in solar cells, light emitting diodes, bioimaging, and electronic displays. ADVANTAGE - The method produces high yield of size controlled GQD with high potential, provides electrochemical synthesis of GQD at room temperature, is simple and ensures low temperature and low oxidation time.