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Photocatalytic activity and its stacking order dependence of transparent 12 tungsto(VI) phosphoric acid-brookite hybrid films

Paper ID Volume ID Publish Year Pages File Format Full-Text
41424 45889 2011 6 PDF Available
Title
Photocatalytic activity and its stacking order dependence of transparent 12 tungsto(VI) phosphoric acid-brookite hybrid films
Abstract

Transparent hybrid films of brookite (TiO2) and 12 tungsto(VI) phosphoric acid (PW12) were prepared via layer-by-layer (LBL) processes on a quartz substrate with various orders. Their photocatalytic activities were evaluated using gaseous 2-propanol (IPA) decomposition. Pure brookite film showed higher photocatalytic activity than the pure PW12 one; the combination of PW12 to brookite increased the photocatalytic activity. The electron scavenger effect of PW12 against brookite under UV illumination is important for photocatalytic activity improvement. The degree of improvement depends on the film stacking order. Their photocatalytic activity was the highest when PW12 was arranged on the film's topmost surface.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (148 K)Download as PowerPoint slideHighlights► Transparent hybrid films of brookite and PW12 were prepared via layer-by-layer process. ► The combination of PW12 to brookite increased the photocatalytic activity. ► The electron scavenger effect of PW12 against brookite plays an important role. ► The degree of the improvement depends on the stacking order in the films. ► Photocatalytic activity was the highest when PW12 was arranged on the topmost surface of the film.

Keywords
Brookite; Photocatalyst; Layer-by-layer; KEGGIN; Stacking order
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Photocatalytic activity and its stacking order dependence of transparent 12 tungsto(VI) phosphoric acid-brookite hybrid films
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 399, Issues 1–2, 31 May 2011, Pages 22–27
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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