Fluorescent carbon nanoparticles, also known as carbon quantum dots (CQDs), have attracted a lot of attention due to their potential applications in chemical sensing, biomedical imaging, nanotechnology, photovoltaics, light-emitting diodes (LEDs), and electrochemistry, especially when compared to traditional semiconductor quantum dots. CQDs have beneficial optical properties in addition to their beneficial toxicity, ecological friendliness, low cost, and easy production processes. To further tailor CQDs to specific applications, surface passivation and functionalization are other viable options. Because of their exceptional qualities and broad applicability, CQDs are the subject of this review. Several methods for synthesising CQDs, as well as their advantages and disadvantages, and potential applications in sensors, bioimaging, drug administration, solar cells, and supercapacitors, are discussed in the article.

Carbon quantum dots, a synthetic method, biomedical uses, energy storage, and biosensors are some of the relevant terms.