Photocatalytic degradation of antibiotic tetracycline by 2D Bi2O2S/g-C3N4 heterojunction under visible irradiation.

This research investigates the application of a 2D Bi2O2S/g-C3N4 heterojunction in the photocatalytic degradation of tetracycline antibiotics under visible light irradiation. The heterojunction, comprising bismuth oxysulphide (Bi2O2S) and graphitic carbon nitride (g-C3N4), synergistically enhances photocatalytic activity. The Bi2O2S/g-C3N4 composite exhibited the highest percentage of degradation (64%), which is ~2 times higher than the pristine g-C3N4 and Bi2O2S alone. This enhancement in activity is attributed to the synergetic effect of heterojunction formation and enhanced visible light absorption. The prepared materials were analyzed by XRD, FTIR, TEM, and PL spectroscopy. [ABSTRACT FROM AUTHOR]