| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6454272 | Applied Catalysis B: Environmental | 2017 | 9 Pages |
â¢Ag3PO4/CuBi2O4 samples were prepared by an in situ precipitation method.â¢Ag3PO4/CuBi2O4 samples were characterized by various characterization technologies.â¢Ag3PO4/CuBi2O4 samples showed outstanding photocatalytic activity compared with the Ag3PO4 and CuBi2O4..
The Ag3PO4/CuBi2O4 (ACBO) composites with a small quantity of Ag3PO4 nanoparticles (0.5-10Â wt.%) were synthesized by an in situ precipitation method and characterized by XRD, SEM, EDS, TEM, BET, XPS, UV-vis absorption spectra, PL, EIS and ESR analysis. Obviously, all the ACBO photocatalysts exhibited significantly enhanced photocatalytic performances. Meanwhile, ACBO with 5Â wt.% content of Ag3PO4 (ACBO-5) showed the highest photocatalytic activity, which is around 2.79 and 2.16-fold higher than that of pristine Ag3PO4 and CuBi2O4, respectively. The enhanced photocatalytic activity could be due to the efficient separation of photogenerated electron-hole pairs through the formation of Z-scheme system composed of Ag3PO4, Ag and CuBi2O4, in which a small quantity of reducible Ag nanoparticles acted as the charge transmission-bridge. Moreover, the high photocatalytic stability of as-synthesized ACBO heterojunction photocatalyst was obtained through five successive cycling experiments. Finally, a possible photocatalytic mechanism was also discussed.
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