Citation: HUANG Cheng, CHANG Ting, ZHANG Yue, KANG Shi-Zhao, LI Xiang-Qing, MU Jin. Photocatalytic Activity and Optoelectronic Property of Porphyrin Tin-Sensitized TiO2 Nanotubes[J]. Chinese Journal of Inorganic Chemistry, ;2014, (2): 331-336. doi: 10.11862/CJIC.2014.007
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TiO2 nanotubes sensitized with trans-dihydroxo[5,10,15,10-tetraphenyl porphyrin] tin(Ⅳ) (abbreviated to SnTPP) were prepared. The photocatalytic activity of SnTPP-sensitized TiO2 nanotubes were evaluated by using p-nitrophenol as a model contaminant under visible light irradiation. Meanwhile, SnTPP-sensitized TiO2 nanoparticles were selected as a reference substance to explore the effect of morphology on the photocatalytic activity of catalysts. The experimental results show that introduction of SnTPP can significantly enhance the visible light photocatalytic activity of TiO2 nanotubes. And TiO2 nanotubes show higher sensitizing effect of SnTPP than TiO2 nanoparticles, indicating that the morphology of a catalyst plays an important role in the photocatalytic process. In addition, the photoelectrochemical behavior of SnTPP-sensitized TiO2 nanotubes was examined and related with the photocatalytic activity. Finally, the sensitizing mechanism of SnTPP was discussed preliminarily.
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