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- W2620500010 abstract "Abstract Highly ordered TiO 2 nanotube arrays (TiO 2 NTs) were prepared through a facile two-step electrochemical anodization, subsequently, active iron ions were introduced into the TiO 2 NTs via a direct impregnation method. The XPS results showed that the iron elements existed in TiO 2 NTs in the form of Fe 3+ ions. Compared with the undoped TiO 2 NTs, the absorption edge of Fe 3+ /TiO 2 NTs showed an overt red shift and the photocurrent improved obviously, which indicated that Fe 3+ /TiO 2 had a much higher photocatalytic activity. The optimal doping content was tested to be 0.1 mol/L which could make the photocatalytic activity of TiO 2 NTs obviously improves under both visible and ultraviolent light. The prepared samples were adopted as photocatalyst to degrade nitrobenzene (NB). The reaction rate constants k s under UV light were in the order k one-stepTiO2NTs = 0.00338 k two-ste TiO NTs = 0.00455 k Fe3+/TiO NTs = 0.00736 which showed the superior photocatalysis activity of Fe 3+ /TiO 2 NTs. The final degradation products were probed to be CO 2 and H 2 O, which demonstrated that NB could be completely mineralized to harmless inorganic substance. The mechanism of NB degradation with Fe 3+ /TiO 2 was also discussed and the quenching experiments further confirm that OH, h + and O 2 − are active intermediates in the process of photocatalytic degradation." @default.
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- W2620500010 date "2017-10-01" @default.
- W2620500010 modified "2023-10-16" @default.
- W2620500010 title "Highly ordered Fe 3+ /TiO 2 nanotube arrays for efficient photocataltyic degradation of nitrobenzene" @default.
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- W2620500010 doi "https://doi.org/10.1016/j.apsusc.2017.05.213" @default.
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