3.7. Photocatalytic activity and reaction mechanism analysis
Fig. 7. (A) The photocatalysis activities of the catalysts; (B) cyclic photocatalysis decolorization performance for the Cu2O–CuCl40 sample.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 8. (A, B) Cu 2p and O 1s XPS and (C) XRD of the Cu2O–CuCl40 sample before and after testing; (D) SEM of the Cu2O–CuCl40 sample after testing.Figure optionsDownload full-size imageDownload as PowerPoint slide
In summary, bi-component Cu2O–CuCl composites have been successfully fabricated via Gemcitabine simple hydrothermal reduction method. The O/Cl ratios of the microcube Cu2O–CuCl composites can be easily tuned by the glucose amount. The results indicate that the two important influence factors (oxygen vacancies content and Eg band gap) for the photocatalyst are heavily dependent on the O/Cl ratios of the as-prepared samples. Compared with the single Cu2O sample, the Cu2O–CuCl composites showed better photodecoloration of MB under visible light, which might be attributed to the more oxygen vacancies and lower Eg value. This research provides a promising route to prepare the Cu2O–CuCl composite as photocatalyst with high catalytic activity.