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Synthesis of Fe-doped WO3 nanostructures with high visible-light-driven photocatalytic activities

Paper ID Volume ID Publish Year Pages File Format Full-Text
45703 46421 2015 9 PDF Available
Title
Synthesis of Fe-doped WO3 nanostructures with high visible-light-driven photocatalytic activities
Abstract

•Fe-doped WO3 ultrathin hollow spheres have been obtained with template method.•The band gap of Fe-doped WO3 is tunable by controlling Fe doped contents.•The photocatalysis of Fe-doped WO3 nanostructures has been improved considerably.

In this paper, the Fe-doped WO3 nanostructures with precisely controlled Fe doping contents are obtained by using a template method. The characterizations obviously show that the as-prepared samples have hollow spherical like morphology, small grain size (10 nm), high crystalline quality, and ultrahigh surface area (225 m2/g). Furthermore, the band gap of the Fe-doped WO3 nanostructures is facilely tunable by controlling the Fe contents. And the density-functional theory (DFT) calculation reveals that the formation of impurity band in the band gap narrows the band gap of the Fe-doped WO3 nanostructures. The photocatalytic activity of WO3 nanostructures could be remarkably enhanced by doping the Fe impurity. This can be attributed to the fact that the red shift of absorption edge and the trapping effect of the Fe-doped WO3 nanostructures. The research result provides a general and effective method to synthesize different photocatalysts with enhanced visible-light-driven photocatalytic performance.

Graphical abstractThe Fe-doped WO3 nanostructures are obtained by using a template method with precisely controlled Fe doping contents and the photocatalytic activity of Fe-doped WO3 could be remarkably enhanced by doping Fe impurity under visible light.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Fe-doped WO3; Nanostructures; Photocatalyts; Visible-light absorption; DFT
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Synthesis of Fe-doped WO3 nanostructures with high visible-light-driven photocatalytic activities
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 166–167, May 2015, Pages 112–120
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