fulltext.study @t Gmail

Excellent photo-Fenton catalysts of Fe–Co Prussian blue analogues and their reaction mechanism study

Paper ID Volume ID Publish Year Pages File Format Full-Text
45449 46412 2015 10 PDF Available
Title
Excellent photo-Fenton catalysts of Fe–Co Prussian blue analogues and their reaction mechanism study
Abstract

•Fe–Co PBAs were developed as the excellent photo-Fenton catalysts.•Iron redox cycling in the Fe–Co PBAs photo-Fenton process was investigated.•The structural properties and reaction mechanisms of Fe–Co PBAs were explored.•The singlet oxygen was identified and relevant radical reactions were proposed.•The high recyclability of FeIII–Co PBA and oxidized FeII–Co PBA was identified.

Two kinds of Fe–Co Prussian blue analogues (Fe–Co PBAs) with different iron valence state, Fe3[Co(CN)6]2·12H2O and Fe[Co(CN)6]·2H2O, were developed as the photo-Fenton catalysts for in-depth investigation of the heterogeneous Fenton reaction mechanism. These two catalysts showed exceptionally high efficiencies for the degradation of Rhodamine B. The efficient redox cycling of iron species in the Fe–Co PBAs photo-Fenton process was deeply explored by Mössbauer spectroscopy. The excellent photo-Fenton activities of these Fe–Co PBAs were ascribed to the existence of highly dispersed water coordinated iron sites and abundant vacancies in the metal-organic-frameworks. Singlet oxygen was identified by radical scavenger experiments and electron paramagnetic resonance spectroscopy, which plays a key role in the photo-Fenton process. Based on these comprehensive experimental results, a novel radical reaction mechanism was proposed. This work not only opens up a new avenue for the application of Fe–Co PBAs, but also gives a deeper insight into the mechanisms of heterogeneous Fenton reactions.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Fe–Co Prussian blue; Mössbauer spectroscopy; Heterogeneous Fenton mechanism; Water coordinated iron; Singlet oxygen
First Page Preview
Excellent photo-Fenton catalysts of Fe–Co Prussian blue analogues and their reaction mechanism study
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 179, December 2015, Pages 196–205
Authors
, , , , , , ,
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