Progress in Synthesis and Sensing Imaging of Biomass-based Carbon Quantum Dots

As a kind of carbon-based luminescent nanomaterials, carbon quantum dots (CQDs) have been widely used in the fields of biosensor and biological imaging because of their low toxicity, adjustable optical properties, low cost, excellent light stability and good biocompatibility. Although there are various methods to synthesize CQDs, the green synthesis method using biomass-based natural raw materials can convert low-value wastes into high-value biomass-based CQDs, which is the trend to realize the energy sustainable development in the future. In this review, we summarized the synthesis methods of biomass-based CQDs and their latest development in the field of sensing and imaging. Meanwhile, the application prospect and development direction of biomass-based CQDs in the field of sensing and imaging were also prospected.