“…Carbon quantum dots (CQDs) are zero-dimensional carbon-based nanomaterials and have attracted considerable interest due to their exceptional biocompatibility, low toxicity, resistance to photobleaching, tunable luminescence properties and high-temperature stability. − As a result, they show growing applications in sensing, bioimaging, drug delivery, and medical diagnosis, LED production, energy conversion and storage, and so on. Recently, CQDs are recognized as a facial, effective sustainable catalyst in synthetic organic chemistry because of their assessable surface functional groups. , Owing to their distinct applications numerous methodologies have been developed for their synthesis such as arc discharge, laser ablation, electrochemical oxidation, acidic oxidation, thermal combustion, hydrothermal oxidation, microwave pyrolysis of different chemical-based carbon sources . Many of these strategies have some disadvantages such as multistep fabrication, a complicated setup, expensive starting materials and processes, post separation techniques, required strong acidic environments, low yields, time-consuming processes, and surface passivation.…”