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Mesoporous plasmonic Au-loaded Ta2O5 nanocomposites for efficient visible light photocatalysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
54297 47004 2014 6 PDF Available
Title
Mesoporous plasmonic Au-loaded Ta2O5 nanocomposites for efficient visible light photocatalysis
Abstract

•Au/m-Ta2O5 photocatalyst was first prepared via a facile photodeposition method.•Catalyst exhibited enhanced visible light activities in water splitting for H2.•Catalyst exhibited enhanced visible light activities in photodegradation of RhB.•SPR effect of Au plays a critical role for the enhanced visible light activities.•Large surface area and mesoporous structure is also related to enhanced activities.

Au-loaded mesoporous Ta2O5 (Au/m-Ta2O5) with high visible light photocatalytic activities were successfully prepared via a facile photodeposition methodology. The photocatalytic activities of Au/m-Ta2O5 were then evaluated by photocatalytic hydrogen production from a methanol aqueous solution as well as photodegradation of Rhodamine B in aqueous solution under visible light irradiation (λ > 400 nm). The photocatalytic experimental results showed that Au/m-Ta2O5 exhibited enhanced visible light photocatalytic activities than those of Au-loaded commercial bulk Ta2O5 (Au/b-Ta2O5). This was mainly due to its large specific surface area and mesoporous structure. The possible visible-light-driven photocatalytic mechanism of Au/Ta2O5 was also proposed.

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Keywords
Photocatalysis; Visible light; Mesoporous; Tantalum oxide; Water splitting
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 225, 15 April 2014, Pages 158–163
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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