Calcination synthesis of N-doped BiOIO3 with high LED-light-driven photocatalytic activity.

Highlights • Novel N-doped BiOIO 3 was synthesized by calcining BiOIO 3 and urea. • N-BiOIO 3 exhibited good visible-light absorption. • N-BiOIO 3 showed good electron-hole separation efficiency. • BiOIO 3 can photodegrade Rhodamine B, bisphenol A, tetracycline and ciprofloxacin. • N-BiOIO 3 showed higher photocatalytic activity than BiOIO 3 under LED light. Abstract Novel LED-light-active N-doped BiOIO 3 was synthesized successfully by calcination treatment of the mixture of BiOIO 3 and urea. It gave a fairly easy way to coordinate the control of bandgap engineering. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirmed the incorporation of nitrogen into the BiOIO 3. In UV–vis diffuse reflection spectroscopy (UV–vis), photocurrent-time measurement (PT) and electrochemical impedance spectroscopy (EIS), the N-doped BiOIO 3 exhibits enhanced visible-light absorption and improved photocurrent response compared to pure-BiOIO 3. The photocatalytic activity of the samples was evaluated via photodegradation of rhodamine B (RhB), bisphenol A (BPA), tetracycline (TC) and ciprofloxacin (CIP) under LED light irradiation. The N-doped BiOIO 3 showed higher photocatalytic activity than pure BiOIO 3. [ABSTRACT FROM AUTHOR]