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Novel photocatalytic applications of sub-nanometer gold particles for environmental liquid and gas phase reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
46959 46454 2011 6 PDF Available
Title
Novel photocatalytic applications of sub-nanometer gold particles for environmental liquid and gas phase reactions
Abstract

Ultra small sub-1 nm gold nanoparticles were synthesized, characterized and deposited on TiO2 support. They exhibited a remarkable photocatalytic activity for both liquid and gas phase oxidation reactions, which have a significant potential for environmental applications. The NO2 conversion on such catalysts was 6 times higher as compared to that of unmodified catalysts. This is the first ever application of such small clusters for environmental photocatalysis. The presence of sub-1 nm clusters was confirmed by TEM, MALDI-TOF MS and UV–vis spectroscopy. This work also included the novel use of modified DRIFT spectroscopy for photocatalytic testing as well improvement of known Au clusters synthesis procedures.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► In this study we first ever demonstrate the application of sub-1 nm gold particles for both gas and liquid photocatalysis. ► We explore an advanced method of testing based on DRIFTS modified with UV fiber as well as improved method of Au synthesis. ► Our catalysts exhibited a remarkable photocatalytic activity, which was much higher than one of the most active photocatalysts such as P25 TiO2.

Keywords
TiO2; Photocatalysis; Gold nanoparticles; Phenol degradation; DRIFTS
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Novel photocatalytic applications of sub-nanometer gold particles for environmental liquid and gas phase reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 104, Issues 3–4, 18 May 2011, Pages 239–244
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