Abstract
Carbon dot (CD) is a novel type of zero-dimensional nanomaterials and has drawn much attention due to its excellent properties including good water solubility, low toxicity, high photostability, biocompatibility, outstanding selectivity and sensitivity for target analytes. The utilization of green biomass resources as a carbon source offers an economically feasible synthetic route for the large-scale production of CDs. Biomass waste is a cheap, highly abundant renewable resource that can promote the synthesis of high efficient CDs for sustainable application in numerous fields including drug delivery, bioimaging and sensing. This study reviews the feasibility of different biomass materials as a potential precursor for the preparation of CDs through different synthetic approaches such as hydrothermal, pyrolysis, chemical oxidation, microwave-induced treatment etc. and their practical applications in various fields.
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