Abstract
Graphene quantum dots (GQDs) have been synthesized via one-pot hydrothermal approach using glucose as precursors. The obtained products have a size around 3.5 nm, which can be controlled by changing the reaction temperature. With the increase of preparation temperatures, the glucose molecules are dehydrated under hydrothermal conditions and then converted to GQDs. The high temperature helps to increase the graphitization degree of GQDs. The GQDs show the blue color emission under excitation of 300-450 nm, which can be used in electrochemical luminescence devices.
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