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Article Abstract
The design of visible-light-driven photocatalysts has been rapidly developed due to the great application potential in environmental pollution remediation. The present work focused on the construction of a novel ternary g-CN/BiMoO/CeO nanocomposite and the application for photocatalytic removal of 4-CP under irradiation. The g-CN/BiMoO/CeO photocatalysts were successfully synthesized by a facile solid-state thermolysis assisted ultrasonic dispersion to introduce g-CN nanosheets into BiMoO/CeO composite. Morphology characterization revealed that the BiMoO/CeO spherical structure uniformly dispersed on the g-CN nanosheets and the close interface contact induced the generation of dual Z-scheme heterojunction. The as-prepared photocatalysts shown enhanced catalytic activity in comparison with binary BiMoO/CeO composites and the optimal CBC-20% exhibited the highest degradation efficiency of 99.1% for 4-CP under 80 min illumination, which was attributed to the efficient separation of photogenerated e-h pairs under the dual Z-scheme charges transfer mode. Additionally, combined with trapping experiments and EPR analysis, 4-CP was decomposed mainly by the active species O and h with a marginal assistance of OH during the photocatalytic process. The intermediates for 4-CP degradation were analyzed and a reasonable degradation pathway was proposed.
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| http://dx.doi.org/10.1016/j.envpol.2022.120436 | DOI Listing |
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