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Preparation and photocatalytic activity of [PWxMo12−xO40]3−/TiO2 hybrid film composites

Paper ID Volume ID Publish Year Pages File Format Full-Text
41976 45906 2010 6 PDF Available
Title
Preparation and photocatalytic activity of [PWxMo12−xO40]3−/TiO2 hybrid film composites
Abstract

Keggin ions (PW12O403− (PW12), PW6Mo6O403− (PW6Mo6), PMo12O403− (PMo12)) and TiO2 hybrid thin films were prepared using the layer-by-layer (LBL) method. Their photocatalytic activities were investigated using gaseous 2-propanol (IPA) decomposition. All films were transparent in the visible wavelength range. From XPS and UV–vis spectra, it was confirmed that LBL coating was attained using the same thicknesses between Keggin ions and TiO2. For IPA decomposition, PW12 was the most effective for the combination with TiO2. The PMo12 possessed the highest adsorption capability against gaseous IPA, suggesting the effect of pseudo-liquid phase. Visible-light excitation of reduced Keggin ions will play an important role in the entire photocatalytic activity of IPA decomposition.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (92 K)Download as PowerPoint slideResearch highlights▶ Keggin ions ((PW12), (PW6Mo6), and (PMo12)) and TiO2 hybrid thin films were prepared using the layer-by-layer method. ▶ For IPA decomposition, PW12 was the most effective. ▶ The PMo12 possessed the highest adsorption capability against gaseous IPA. ▶ Visible-light excitation of reduced Keggin ions will play an important role in the entire photocatalytic activity of IPA decomposition.

Keywords
Photocatalyst; Keggin; TiO2; Layer-by-layer method; 2-Propanol
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Preparation and photocatalytic activity of [PWxMo12−xO40]3−/TiO2 hybrid film composites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 385, Issues 1–2, 15 September 2010, Pages 130–135
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
100% Money Back Guarantee
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