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Facile microwave-assisted synthesis of monodispersed ball-like Ag@AgBr photocatalyst with high activity and durability

Paper ID Volume ID Publish Year Pages File Format Full-Text
40362 45851 2013 10 PDF Available
Title
Facile microwave-assisted synthesis of monodispersed ball-like Ag@AgBr photocatalyst with high activity and durability
Abstract

We reported a rapid one-step microwave-assisted approach to synthesize a plasmonic photocatalyst of ball-like AgBr nanoparticles (ca. 290 nm in average diameter) with a small amount of metal Ag anchored on the surface. The obtained Ag@AgBr nanocomposites were characterized by means of X-ray diffraction, scanning electron microscopy, Transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and UV-visible diffuse reflectance spectroscopy. The shape, size, and compositions of the Ag@AgBr photocatalysts could be controlled by tuning the microwave irradiation time and the concentrations of polyvinylpyrrolidone (PVP) in the reaction solution. The as-prepared Ag@AgBr plasmonic photocatalysts show excellent visible-light photocatalytic performance and good reusability for decomposing organic pollutant of Rhodamine B (RhB) due to the surface plasmon resonance (SPR) effect of Ag nanoparticles. Meanwhile, the possible degradation pathways of RhB and a mechanism of the plasmonic photocatalytic process were also proposed.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (119 K)Download as PowerPoint slideHighlights► The monodispersed and uniform Ag@AgBr ball-like photocatalysts were synthesized. ► The shape, size and composition of the products could be well controlled. ► The Ag@AgBr visible light photocatalysts show high activity and good durability. ► The degradation pathways and the mechanism of photocatalytic process were proposed.

Keywords
Nanoparticles; Photocatalysis; Silver; Silver bromide; Microwave
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Facile microwave-assisted synthesis of monodispersed ball-like Ag@AgBr photocatalyst with high activity and durability
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 455, 30 March 2013, Pages 183–192
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
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Any Questions? feel free to contact us