Abstract
We reported a facile way to synthesize nanocrystalline ZnO particles with excellent photocatalytic performance. Their microstructures and optical properties were characterized by X-ray diffraction, field emission scanning electron, transmission electron microscopy, photoluminescence spectra and ultraviolet–visible (UV–Vis) spectra. Photocatalytic tests showed the as-prepared ZnO particles had a good activity for photodegradation of organic dyes under UV–Vis light irradiation, which was comparable with that of P25 TiO2, a commercial standard photocatalyst. Furthermore, the sample could be easily sedimentary from the reaction system, which was favorable for the separation and reuse. Meanwhile, the photocatalytic performance of the samples exhibited no obvious reduction in the activity after five recycles of photodegradation, demonstrating its superior reusability. We attributed the superior performance to the efficient synergistic effect resulted from the small nano size, as well as the appropriate oxygen vacancies in the ZnO lattice. Our work might be promising for the application of ZnO-based photocatalysts due to its low cost, easy process, and good performance.
Published Version
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