Abstract
In this paper, a neoteric copper (II) meso-tetra (4-carboxyphenyl) porphine (CuTCPP) was combined with TiO2 nanotubes to prepare photocatalyst under visible light through the methods of the improved hydrothermal and heating reflux process. The material was characterized by transmission electron microscopy (TEM), Energy Dispersive Spectrometer (EDS), X-ray diffraction (XRD), diffuse reflectance UV–Vis spectra (DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence spectroscopy (PL), and electron paramagnetic resonance (EPR). The photocatalytic effects of TiO2 nanotubes sensitized with this copper (II) porphyrin were surveyed by the photodegradation of methylene blue (MB) in aqueous solution under visible light irradiation. The results showed that the TiO2 nanotubes sensitized by CuTCPP could enlarge the wavelength response range, transfer the excited electrons and separate the photo-generated electron–hole pairs more effectively. The photocatalytic activity was improved under visible light irradiation in the end.
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Acknowledgments
This work was financially sponsored by the Natural Science Foundation of Zhejiang Province (No. LY13B030009), the Science Foundation of Zhejiang Sci-Tech University (ZSTU) (No. 1101820-Y) and the National Natural Science Foundation of China (Nos. 21271155 and 20703038).
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Wei, M., Wan, J., Hu, Z. et al. Photoinduced interfacial charge transfer and photocatalytic behavior of TiO2 nanotubes sensitized by copper (II) meso-tetra (4-carboxyphenyl) porphyrin. J Mater Sci: Mater Electron 27, 4026–4034 (2016). https://doi.org/10.1007/s10854-015-4257-8
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DOI: https://doi.org/10.1007/s10854-015-4257-8