Catalytic evaluation and bacterial inactivation of graphitic carbon nitride/carbon sphere doped bismuth oxide quantum dots with evidential analysis.

Herein, BiO quantum dots (QDs) have been synthesized and doped with various concentrations of graphitic carbon nitride (g-CN) and a fixed amount of carbon spheres (CS) using a co-precipitation technique. XRD analysis confirmed the presence of monoclinic structure along the space group 2/ and 2/. Various functional groups and characteristic peaks of (Bi-O) were identified using FTIR spectra. QDs morphology of BiO showed agglomeration with higher amounts of g-CN by TEM analysis. HR-TEM determined the variation in the -spacing which increased with increasing dopants. These doping agents were employed to reduce the exciting recombination rate of BiO QDs by providing more active sites which enhance antibacterial activity. Notably, (6 wt%) g-CN/CS-doped BiO exhibited considerable antimicrobial potential in opposition to at higher values of concentrations relative to ciprofloxacin. The (3 wt%) g-CN/CS-doped BiO exhibits the highest catalytic potential (97.67%) against RhB in a neutral medium. The compound g-CN/CS-BiO has been suggested as a potential inhibitor of β-lactamase and DNA gyrase based on the findings of a molecular docking study that was in better agreement with bactericidal activity.