In this study,the bones,Monopteros albus processing by-products,were used as carbon source to synthesize Mab-CQDs using one-step green hydrothermal method.The effects of bone powder amount,reaction temperature,and reaction time on the fluorescence intensity were investigated to optimize the prep-aration process of Mab-CQDs.The morphology and optical properties of Mab-CQDs were characterized using transmission scanning electron microscopy(TEM),infrared spectroscopy(FT-IR),and X-ray Pow-der diffractometer(XRD).In addition,pathogenic bacteria Stap...