Effective promotion of g-CN photocatalytic performance via surface oxygen vacancy and coupling with bismuth-based semiconductors towards antibiotics degradation.

In this research, the potential of bismuth chromate (BCO), a new bismuth-based semiconductor belongs to the family of BiXO (X = Mo, W, or Cr), was introduced by a novel 1D/2D structure consist of BCO nanobelts and N-freezed ultra-wrinkled graphitic carbon nitride (N-CN) nanosheets. To enhance intimate contact between BCO and N-CN (BCO/N-CN composite), surface oxygen vacancy (V) was created as an efficient electron transfer highway using a simple alkaline-treatment-assisted method. Various characterization techniques, including XRD, FT-IR, EPR, FE-SEM, TEM, BET, DRS, PL, EIS, and photocurrent transient analyses were conducted to elucidate the physicochemical aspects of catalysts.