Silver nanoparticle@carbon quantum dot composite as an antibacterial agent.

A AgNPs@S,N-CQDs composite was synthesized by a one-step approach. It possessed AgNPs naturally surrounded by S,N-CQDs, and the size of the particles was found to be uniform and stable a series of characterization methods. The antibacterial properties of the composite material were studied, and it had good antibacterial properties against , , MRSA and . The minimum inhibitory concentrations were 63 μg mL against and MRSA and 32 μg mL against and . In addition, the AgNPs@S,N-CQDs composite had an antibacterial effect the generation of ROS, which was verified using the DCFH-DA kit. Finally, HepG2 cells were used to study its biocompatibility. The antibacterial properties and biocompatibility results show that the AgNPs@S,N-CQDs composite material can serve as a promising antibacterial agent.