Ba5Ta4O15 Nanosheet/AgVO3 Nanoribbon Heterojunctions with Enhanced Photocatalytic Oxidation Performance: Hole Dominated Charge Transfer Path and Plasmonic Effect Insight

Heterojunction photocatalysts for environmental pollutant removal have attracted great attention because of their excellent photocatalytic efficiency. In this study, we report a novel Ba 5 Ta 4 O 15 /AgVO 3 heterojunction photocatalyst with excellent photocatalytic activity, which was synthesized by a facile, two-step, self-assembly strategy. Transmission electron microscopy (TEM) reveals that Ba 5 Ta 4 O 15 nanosheets adhered to the surface of AgVO 3 nanoribbons to form Ba 5 Ta 4 O 15 /AgVO 3 heterojunctions. The as-obtained photocatalysts exhibited enhanced photocatalytic activities for Acid Red G (ARG) degradation, which are almost 2.7 times higher than that of AgVO 3 . The trapping experiments, electrochemical and electron paramagnetic resonance analyses altogether indicate that the enhanced photocatalytic performance could be attributed to the synergy effect of the hole dominated charge transform path and localized surface plasmon resonance (LSPR). Finally, a possible photocatalytic mechanism of the photocatalytic progress was discussed. This study might provide a novel strategy toward designing highly efficient heterojunction photocatalyst systems for pollutant degradation and environmental remediation.