Preparation and Photocatalytic Activity of Nano-FeOOH/TiO2/Mmt Composite <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

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Preparation and Photocatalytic Activity of Nano-FeOOH/TiO₂/Mmt Composite

详细信息

责任者：Liu Liu (Wuhan University of Technology ; Wuhan 430070 ; China) ; Sun Zhenya
刊名：Acta Mineralogica Sinica
出版年：2009
卷期：29(3)
关键词：蒙脱石 ; montmorillonite ; 纳米材料 ; nano materials
页码：p.295-301
图表：9 illus., 15 refs.
分类号：0700
issnNo：ISSN1000-4734
isbnNo：CN52-1045/P

摘要

TiO₂/Montmorillonite (TiO₂/Mmt) composite was firstly prepared by the sol-gel method, then was put into the Fe(NO₃)3-HNO₃ system in order to form the nano-FeOOH/ TiO₂/Mmt composite depending on the hydrolysis of Fe³⁺ through controlling pH, temperature and concentration. This sample could improve the photocatalysis effect in visible light. TEM result showed that the FeOOH/ TiO₂ composite film is 10～40 nm thick, and TiO₂ is anatase measured at 5~10 nm in size, on TiO₂/Mmt surface the goethite nanofilm was formed which is measured at 10~30 nm in length, and 4 nm in width. Finally, the IR spectra of MO showed that the FeOOH/TiO₂/Mmt/H₂O₂/UV system possesses the better photocatalytic activity than FeOOH/TiO₂/Mmt/ H₂O₂/Visible light for the strong capability of oxidating benzene ring.

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