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MXenes have aroused widespread interest in the biomedical field owing to their remarkable photo-thermal conversion capabilities combined with large specific surface areas. MXenes quantum dots (MQDs) have been synthesized either by the physical or chemical methods based on MXenes as precursors, which possess smaller size, higher photoluminescence, coupled with low cytotoxicity and many beneficial properties of MXenes, thereby having potential biomedical applications. Given this, this review summarized the synthesis methods, optical, surface and biological properties of MQDs along with their practical applications in the field of biomedicine. Finally, the authors make an outlook towards the synthesis, properties and applications of MQDs in the future biomedicine field.

MXenes family are novel two-dimensional (2D) materials that have been widely used in many fields such as cancer therapy, imaging, sensing, and electrochemistry due to their excellent photothermal and loading properties. Herein, A Ti 3 C 2 nanosheets (MXene) as a carrier for insecticide was reported. Nanocomposites were formulated by adsorbing the most widely used insecticidal substance, avermectin, onto MXene (MXene@AV). It takes full advantage of the loading and photothermal capabilities of MXene and the broad-spectrum insecticidal properties of avermectin to provide a more efficient and environmentally friendly alternative. The results show that MXene@AV exhibits excellent stability and photothermal capability, with a photothermal conversion efficiency as high as 39.84 %. The combination of photothermal contact killing and poisoning enables it to show strong lethality and sustained efficacy against the common pest Spodoptera frugiperda. Therefore, MXene@AV, an insecticide with MXene as a carrier, has the potential to be applied to agricultural pest control.