Abstract
Hetero-photocatalysts TiO2/CuO were prepared by a wet impregnation process and their optical properties were characterized with a variety of techniques. The x-ray diffraction patterns corresponding to the anatase and the rutile phases of TiO2 were noticed for all the samples, but the peaks belonging to CuO crystals were observed only for samples with high CuO content (≥4 wt.%). The UV–Vis spectra show that absorption edges of the modified TiO2 were shifted toward longer wavelengths, indicating a reduction in the energy bandgap upon CuO. For photocatalytic application, the addition of CuO into TiO2 was found to increase the photodegradation of methylene blue and methylene orange with the highest photodegradation observed at CuO content of 3 wt.%. Moreover, using some extra experimental processes, we reveal how the CuO component affects the optical properties of the resulting materials.
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Khang, N.C. Further Investigation and Analysis on the Origin of the Optical Properties of Visible Hetero-photocatalyst TiO2/CuO. J. Electron. Mater. 46, 5497–5502 (2017). https://doi.org/10.1007/s11664-017-5598-2
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DOI: https://doi.org/10.1007/s11664-017-5598-2