Visible-Light Photocatalytic Property of Titanate Nanotubes Sensitized by Several Porphyrins

Xiang Qing Li; Li Fang Liu; Shi Zhao Kang; Jin Mu; Guo Dong Li

doi:10.4028/www.scientific.net/AMR.239-242.2403

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242Visible-Light Photocatalytic Property of Titanate...

Visible-Light Photocatalytic Property of Titanate Nanotubes Sensitized by Several Porphyrins

Abstract:

The visible-light photocatalytic activity of titanate nanotubes (TiNTs) sensitized by 5,10,15,20-tetraphenylporphyrin (TPP), 5,10,15,20-tetraphenylporphyrin manganese (MnTPP), 5,10,15,20-tetraphenylporphyrin nickel (NiTPP) and 5,10,15,20-tetraphenylporphyrin zinc (ZnTPP), respectively, was investigated by the photocatalytic degradation of methyl orange (MO) as a probe reaction. The results showed that the central ions of porphyrins had an important influence on the photocatalytic activity of the samples. The activity was in the order of TiNTs-ZnTPP > TiNTs-TPP > TiNTs-NiTPP > TiNTs-MnTPP. Combined the result of absorption spectra with that of fluorescence spectra, it was demonstrated that various visible-light absorption and photoelectron transfer caused by the central ions of porphyrins were the decisive factor for the visible-light photocatalytic activity of the sensitized TiNTs.

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Periodical:

Advanced Materials Research (Volumes 239-242)

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2403-2406

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https://doi.org/10.4028/www.scientific.net/AMR.239-242.2403

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Online since:

May 2011

Authors:

Xiang Qing Li, Li Fang Liu, Shi Zhao Kang, Jin Mu, Guo Dong Li

Keywords:

Porphyrin, Sensitization, Titanate Nanotube, Visible Light Photocatalysis

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