NaBiO3/BiO2−x composite photocatalysts with post-illumination “memory” activity

NaBiO3/BiO2−x composite photocatalyst was fabricated via a hydrothermal process. As-obtained materials not only exhibited excellent photocatalytic activity toward the degradation of methyl orange(MO) and phenol under visible light irradiation, but also showed strong post-illumination “memory” activity, which enables it to remove the organic pollutants in the dark, promoting the practical application of photocatalyst.