The construction of TiO2 NTs/Ag3PO4–AgBr by SILAR deposition as promising photocatalysts for hydrogen production and pollutant treatment.

The construction of ternary TiO 2 NTs/Ag 3 PO 4 –AgBr photocatalysts was carried out by the SILAR deposition of Ag 3 PO 4 and AgBr on TiO 2 nanotube arrays (TiO 2 NTs) for enhancing the photocatalytic application in H 2 evolution and dyeing wastewater remediation. The adjustment of Ag 3 PO 4 /AgBr deposition cycles was used to optimize the optical absorption and photocatalytic property. The TiO 2 NTs/Ag 3 PO 4 –AgBr (5) prepared with 5 cycle deposition of Ag 3 PO 4 and AgBr exhibited the optimal photoelectric activity and photocatalytic performances. The photocatalytic rate constants for the degradation of MO, RhB and MB dyes achieved 1.35 × 10−2, 3.30 × 10−2 and 4.47 × 10−2 min−1, respectively, and the visible light-driven photocatalytic H 2 evolution rate achieves 46.87 μmol cm−2 h−1. •O 2 − radicals exhibited the key influence on the organic dye degradation, and the as-prepared photocatalysts showed exceedingly high photocatalytic activity and stability. Furthermore, the photocatalytic mechanism was proposed based on the ESR result. [ABSTRACT FROM AUTHOR]