Enhancement of the Visible-Light Photocatalytic Activity of In2O3鈥揟iO2 Nanofiber Heteroarchitectures

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• 作者：Jingbo Mu ; Bin Chen ; Mingyi Zhang ; Zengcai Guo ; Peng Zhang ; Zhenyi Zhang ; Yangyang Sun ; Changlu Shao ; Yichun Liu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：January 25, 2012
• 年：2012
• 卷：4
• 期：1
• 页码：424-430
• 全文大小：399K
• 年卷期：v.4,no.1(January 25, 2012)
• ISSN：1944-8252

文摘

One-dimensional In₂O₃鈥揟iO₂ heteroarchitectures with high visible-light photocatalytic activity have been successfully obtained by a simple combination of electrospinning technique and solvothermal process. The as-obtained products were characterized by field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray (EDX) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV鈥搗is spectra. The results revealed that the secondary In₂O₃ nanostructures were successfully grown on the primary TiO₂ nanofibers substrates. Compared with the pure TiO₂ nanofibers, the obtained In₂O₃鈥揟iO₂ heteroarchitectures showed enhancement of the visible-light photocatalytic activity to degrade rhodamine B (RB) because of the formation of heteroarchitectures, which might improve the separation of photogenerated electrons and holes derived from the coupling effect of TiO₂ and In₂O₃ heteroarchitectures. Moreover, the In₂O₃鈥揟iO₂ heteroarchitectures could be easily recycled without the decrease in the photocatalytic activity because of their one-dimensional nanostructural property.

Keywords:

In₂O₃; TiO₂; heteroarchitectures; photocatalysis; degradation