Synthesis of BN/g-C3N4 as Visible-light-driven Photocatalysts for Degradation of Different Organic Pollutants

In this work, BN/g-C3N4 composites were prepared by hydrothermal reaction. The BN/g-C3N4 composites were successfully characterized by FTIR spectra, XRD, SEM, HRTEM, UV/Vis DRS, N-2 adsorption-desorption isotherms and BET. The photocatalytic activities of the as-prepared catalysts were evaluated by the degradation of different organic pollutants, such as Acid Red (AR), Rhodamine B (RhB), Congo Red (CR), Methyl Orange (MO), Methyl Red (MR), and Phenol. The best result showed that the 40 wt% BN was added to g-C3N4 (BN/g-C3N4-4) achieved up to 99% decomposition of AR within 90 min under visible-light irradiation. The kinetics of BN/g-C3N4 -4 for degradation of AR was almost six times than that of pure g-C3N4. Finally, the degradation processes of different pollutants and the photocatalytic mechanism had been explained concretely.