Abstract
Graphene quantum dots (GQDs) are the latest superstars added from the carbon family. These are 0D materials with non-zero bandgap and are the most prominent category of nano materials, having a variety of applications in bio-imaging, optical, electrochemical energy devices, and so on and have been studied to great extent in recent years. In this review we have discussed various methods of preparation like hydrothermal, electrochemical, ultrasonic, pyrolysis, etc. and applications of GQDs. Besides, the article highlights challenges and interesting future directions of GQDs.
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