Enhanced photocatalytic activity of a visible-light-driven ternary WO₃/Ag/Ag₃PO₄ heterojunction: a discussion on electron transfer mechanisms.

ABSTRACT: WO₃/Ag₃PO₄ with different weight ratios were prepared by ultrasonic assisted two-step deposition method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence spectroscopy (PL) and transmission electron microscopy (TEM). The photocatalytic activities of all samples were evaluated by the degradation of rhodamine B (RhB) under visible light irradiation. WA-60 shows the highest photocatalytic activity in the WA-x series composite, while the photocatalytic activity of WAA-60 is the best among all samples. The free radical trapping experiments show that photogenerated holes (h⁺) are the main active species. The Ag nanoparticles produced by the decomposition of Ag₃

SUBMITTER: Zhang S 

PROVIDER: S-EPMC9122569 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature