“…[25] However,m ost organic molecules are stille xpensive and pose challenges to the natural environmenta nd humanh ealth:f or instance, polycyclic aromatic hydrocarbons are strong carcinogens, and thus searching for low-cost and environmentally friendly molecule precursors could boost their abundant applications. [28,29] In accordance with the precepts of sustainability,e fforts have been made to utilize sustainable biomass precursors or their extractives, such as Mangifera indica, [30] starch, [31] citric acid, [32] soy milk, [33] sucrose, [28] and others. Unfortunately,f ew biomass wastes can produce highquality CQDs.T herefore, there is an urgent need to develop Sustainable, inexpensive, and environmentally friendly biomass waste can be exploitedf or large-scale production of carbon nanomaterials.…”