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Trinuclear iron cluster intercalated montmorillonite catalyst: Microstructure and photo-Fenton performance

Paper ID Volume ID Publish Year Pages File Format Full-Text
55763 47063 2011 8 PDF Available
Title
Trinuclear iron cluster intercalated montmorillonite catalyst: Microstructure and photo-Fenton performance
Abstract

Trinuclear Fe (III) acetato complex intercalated montmorillonite Fenton catalysts with large surface areas were prepared by a facile ion exchange process. The obtained samples were characterized by FT-IR, TGA-DSC, N2-sorption and XPS in detail. To understand the microstructure of the active iron species in the montmorillonite, the Fe K-edge X-ray absorption spectra (XAFS) technique was also employed. The results showed that the trinuclear iron cluster was successfully intercalated into the layers of montmorillonite and the structure of the active iron species was an amorphous FeO(OH)-like structure after 500 °C post-treatment. When the prepared catalysts were used for the photo-Fenton reaction at room temperature, excellent activities were observed for degradation of phenol. Moreover, their activities were much higher than those of the traditional iron hydroxyl compound intercalated montmoillonite Fenton catalyst. The stable intercalated structure and the low leaching Fe concentration induced that the obtained catalyst can be operated for a long time. Meanwhile, the consumption of H2O2 and the change of pH in solution were also investigated in detail.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (122 K)Download as PowerPoint slideHighlights► An amorphous FeO(OH) microstructure of the active iron species. ► Excellent photo-Fenton activities of the as-prepared catalysts. ► The stable intercalated structure and the low leaching Fe concentration. ► Layered Fenton catalyst with higher activity by intercalating larger iron cluster.

Keywords
Photo-Fenton; Iron cluster; Montmorillonite; Phenol degradation
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Trinuclear iron cluster intercalated montmorillonite catalyst: Microstructure and photo-Fenton performance
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 175, Issue 1, 25 October 2011, Pages 362–369
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us