Abstract
A series of β-Bi2O3/BiOCl heterojunction photocatalysts were successfully synthesized by in-situ treatment of β-Bi2O3 with HCl. Compared to pure β-Bi2O3, the as-synthesized β-Bi2O3/BiOCl composites displayed unexpectedly high visible-light photocatalytic activity for RhB degradation, which was even higher than that of P25 under UV light. Based on the results of transient photocurrent measurement and trapping experiments of active species, the enhanced photocatalytic activity could be ascribed to the formation of heterostructure between β-Bi2O3 and BiOCl, leading to the efficient separation of electron-hole pairs. This research may establish foundation for practical application of the new visible–light–active β-Bi2O3-based heterojunction photocatalysts.
Published Version
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