Photocatalytic Degradation of Methyl Orange over Nitrogen鈥揊luorine Codoped TiO2 Nanobelts Prepared by Solvothermal Synthesis

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• 作者：Zuoli He ; Wenxiu Que ; Jing Chen ; Xingtian Yin ; Yucheng He ; Jiangbo Ren
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：December 26, 2012
• 年：2012
• 卷：4
• 期：12
• 页码：6816-6826
• 全文大小：748K
• 年卷期：v.4,no.12(December 26, 2012)
• ISSN：1944-8252

文摘

Anatase type nitrogen鈥揻luorine (N鈥揊) codoped TiO₂ nanobelts were prepared by a solvothermal method in which amorphous titania microspheres were used as the precursors. The as-prepared TiO₂ nanobelts are composed of thin narrow nanobelts and it is noted that there are large amount of wormhole-like mesopores on these narrow nanobelts. Photocatalytic activity of the N鈥揊 codoped TiO₂ nanobelts was measured by the reaction of photocatalytic degradation of methyl orange. Results indicate that the photocatalytic activity of the N鈥揊 codoped TiO₂ nanobelts is higher than that of P25, which is mainly ascribed to wormhole-like mesopores like prison, larger surface area, and enhanced absorption of light due to N鈥揊 codoping. Interestingly, it is also found that the photocatalytic activity can be further enhanced when tested in a new testing method because more photons can be captured by the nanobelts to stimulate the formation of the hole鈥揺lectron pair.

Keywords:

TiO₂ nanobelt; mesopores; photocatalytic activity; N鈭扚 codoped; solvothermal method