“…So, it is important to construct an ecofriendly, rapid, selective, sensitive, and cost-effective fluorescent probe to determine KETO in the presence of its different interferents, including its photocatalytic degradation products, to further enable monitoring KETO stability in different pharmaceuticals in addition to investigating its complete elimination from the aquatic ecosystems via different photocatalytic reagents. Owing to its simplicity, high sensitivity, and low cost, CDs-based probes have become the magic star for the analysis of many drugs in different matrices, − in addition to their application in the bioimaging field as a biocompatible and cost-effective alternative to the classical quantum dots including graphene quantum dots …”