Modification of porous bismuth molybdate for high removal of antibiotics and H2O2 production

The regulations of the Bi2MoO6 structure, such as dopant incorporation, composite formation, and synthesis condition modification, have garnered significant attention due to their implications for enhancing photocatalytic activity. In this study, potassium acetate was introduced into the synthesis of Bi(2)MoO(6)via a one-pot hydrothermal method to augment its photocatalytic efficiency. It was observed that the addition of potassium acetate effectively modulated the microstructure of Bi2MoO6. XRD and XPS analyses confirmed the incorporation of K+ ions into the [MoO4](2-) and [Bi2O2](2+) layers, significantly influencing the phase structure and morphology of Bi2MoO6. Controlled addition of potassium acetate improved the dispersibility of Bi2MoO6, whereas excessive amounts led to a phase transition from Bi2MoO6 to Bi3.64Mo0.36O6.55. The antibiotic degradation rate and H2O2 yield were used to evaluate the catalytic performance of the catalyst. Bi2MoO6 modified with potassium acetate exhibited higher photocatalytic efficiency than unmodified Bi2MoO6. Specifically, the optimal BMO-1 sample exhibited 97.7% CIP degradation within 15 min of illumination. The enhanced adsorption efficiency was primarily attributed to the effective dispersion and the presence of mesopores. Furthermore, the introduction of oxygen vacancies and improved photogenerated carrier separation efficiency contributed to enhanced photocatalytic performance. This study introduces a novel method for structurally tuning bismuth molybdate.