Controlled preparation of β-Bi 2 O 3 /Mg–Al mixed metal oxides composites with enhanced visible light photocatalytic performance

摘要: In this study, the β-Bi2O3/Mg–Al mixed metal oxides (MMO) composites were controllably prepared by a practical and low-cost method. The as-prepared analyzed XRD, SEM, TEM UV–Vis diffuse reflectance spectra. results showed that Bi2O3 in is β phase with enhanced photocatalytic activity, while pure α phase, MMO obviously red-shifted light absorption performance. Importantly, have significantly improved degradation performance of methylene blue p-chlorophenol under visible irradiation. reaction rate constants for photodegradation are 0.04081 min−1 0.01558 min−1, respectively. exists synergistic effect between β-Bi2O3 Mg–Al main reason obvious improvement performance, which beneficial separation photogenerated electrons holes.