Abstract
TiO\(_{2}\) nanotube arrays prepared by anodization technology are modified with a samarium ion (Sm\(^{3+})\) by a hydrothermal method for use in photodegradation of methylene blue (MB). The samarium ion as a down-shifting luminescence material can improve UV radiation harvesting to increase visible light utilization. The efficiency of the photocatalytic activity for the modified-TiO\(_{2}\) nanotube arrays in degradation of MB was investigated under UV–Vis light irradiation. The results show that Sm–TiO\(_{2}\) nanotubes can increase the photocatalytic efficiency of MB. When TiO\(_{2}\) nanotubes are modified by 0.02 M Sm\(^{3+}\), MB can be almost completely degraded when compared with bare TiO\(_{2}\) nanotubes. This indicates that TiO\(_{2}\) nanotubes structure, surface area and good UV radiation harvesting play important roles in the degradation of MB.
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Acknowledgements
We would like to express their gratitude to Young reserve talents of Harbin (RC2017QN017002), Heilongjiang Provincial Department of Education Innovative Talent Program (UNPYSCT-2018132) and Harbin university of commerce youth program (18XN027).
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Liu, R., Liu, T., Qiao, Y. et al. Photodegradation of methylene blue over a new down-shifting luminescence catalyst. Bull Mater Sci 42, 239 (2019). https://doi.org/10.1007/s12034-019-1920-3
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DOI: https://doi.org/10.1007/s12034-019-1920-3