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Composite photocatalyst achieves 86.9% degradation of 17-alpha-ethinylestradiol under visible light, indicating improved efficiency over traditional methods.
The 17‐alpha‐ethynylestradiol (EE2) is an environmental endocrine disrupting chemical with strong estrogenic effects and stable chemical properties. Photocatalytic pollutant decomposition technology is widely studied for degrading pollutants in water. However, the catalysts employed in the photocatalytic degradation of EE2 generally exhibit poor performance. Now, a AgCl/AgI/2D CeO 2 (AgCl/AgI/2D‐CeO 2 ) composite photocatalyst was synthesized by a precipitation method. The morphology, composition, and structure of AgCl/AgI/2D‐CeO 2 were characterized using X‐ray diffraction, scanning electron microscope, transmission electron microscope, X‐ray photoelectron energy spectrometer, UV–visible diffuse reflectance spectrometer, and photoluminescence spectra. AgCl/AgI/2D‐CeO 2 formed rich active sites, improved the electron migration rate, and effectively inhibited the recombination of photoelectrons and holes. When used as a photocatalyst, it achieved a degradation rate of EE2 at 86.9%within 10 min, which is significantly higher than that of AgCl/AgI/commercial CeO 2 (AgCl/AgI/C‐CeO 2 ) (63.2%), AgCl/AgI (69.1%), and 2D‐CeO 2 (0.8%). AgCl/AgI/2D‐CeO 2 also has good chemical stability and a higher degradation rate constant ( k = 0.1647 min −1 ). Furthermore, the mechanism of photocatalytic degradation of EE2 by AgCl/AgI/CeO 2 was investigated.
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Huang et al. (2025) studied this question.
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