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Non-metal doping of transition metal oxides for visible-light photocatalysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
54293 47004 2014 25 PDF Available
Title
Non-metal doping of transition metal oxides for visible-light photocatalysis
Abstract

•Recent progresses on non-metal doping of transition metal oxides are reviewed.•The origins of visible light absorption upon non-metal doping are discussed.•Pathways to achieve homogeneous non-metal doping are summarized.•An overview on the photocatalytic reactions of non-metal doped materials is presented.

Transition metal oxides and mixed oxides are the largest group of materials for photocatalytic applications. Many highly active compounds are known from literature for environmental remediation, pollutant degradation and solar fuel generation. However, most of these oxides can only absorb UV light to perform photocatalytic reactions at their surface due to their large band gap. In this review, we present the recent progress in non-metal doping of transition metal oxides and mixed oxides, one of the major strategies to reduce the large band gap of semiconductor materials into the visible light range. We outline the advantages of this strategy compared to other band gap engineering methods, and especially stress the effect of efficient homogeneous non-metal doping on the optical, electronic and photocatalytic properties of photocatalysts, compared to surface doping and surface modification, including the effects of an open crystal structure on the efficiency of the doping process. We then present the highlights and breakthroughs of the last ten years in the research field and point out major improvements important for future applications, covering all the available non-metal doped transition metal oxides concerning photocatalytic reactions.

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Keywords
Photocatalysts; Metal oxides; Non-metal doping; Band gap engineering; Visible light photocatalysis
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Non-metal doping of transition metal oxides for visible-light photocatalysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 225, 15 April 2014, Pages 111–135
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