Construction of AgBr/β-Ag2WO4/g-C3N4 ternary composites with dual Z-scheme band alignment for efficient organic pollutants removal

[Display omitted] •Dual-Z-scheme AgBr/β-Ag2WO4/g-C3N4 ternary composites were fabricated.•The photocatalyst displayed excellent performance for Rhodamine B and tetracycline hydrochloride degradation.•The rate constant has significant enhancement compare to single component.•The separation and transfer of the photoinduced charge carriers are efficiently promoted. The speedy recombination of photoexcited charge carriers is one of the major reasons for the unsatisfactory of semiconductor photocatalysts. Herein, AgBr/β-Ag2WO4/g-C3N4 ternary composites with dual Z-scheme band alignment were constructed for colored Rhodamine B and colorless tetracycline hydrochloride degradation. The crystal structure, micro-nano structure, chemical composition, optical and electrochemical properties of the obtained photocatalysts were thoroughly investigated. The optimized AgBr/β-Ag2WO4/g-C3N4 displayed exceptional photocatalytic activities toward Rhodamine B and tetracycline hydrochloride degradation. The dramatically improved catalytic performance could be ascribed to the dual Z-scheme transfer channel of the charge carriers. It is anticipated that this work could offer a novel sight into constructing effective photocatalyst for environmental remediation.