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Large-scale preparation and morphology-dependent photodegradation performances of monodispersed AgBr crystals

Paper ID Volume ID Publish Year Pages File Format Full-Text
40364 45851 2013 7 PDF Available
Title
Large-scale preparation and morphology-dependent photodegradation performances of monodispersed AgBr crystals
Abstract

The physicochemical properties of semiconductor catalysts depend intensively on their morphologies. Herein, three typical AgBr catalysts with well-defined spherical, cubic and octahedral shape were synthesized in a large scale through a facile ion exchange procedure controlled by a computerized double-jet apparatus. The as-synthesized monodispersed AgBr crystals were systematically characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS), powder X-ray diffraction (XRD), and UV–vis diffuse reflection spectra (DRS). To clarify the relationship between photodegradation activities and structures, photodegradation performances of the AgBr crystals were evaluated by the degradation of Rhodamine B (RhB) and methyl orange (MO) aqueous solution under visible-light irradiation. The results demonstrated that the octahedral AgBr crystals exposed with {1 1 1} facets exhibited the highest photodegradation efficiency. Consequently, the present work is going to be instructive to develop the high efficient AgBr and other semiconductor photocatalysts for practical applications in the future.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (247 K)Download as PowerPoint slideHighlights► Monodispersed spherical, cubic and octahedral AgBr crystals were synthesized. ► Photodegradation performances were evaluated by decomposing Rhodamine B and methyl orange. ► AgBr octahedrons enclosed with {1 1 1} facets possessed the highest activities.

Keywords
Photodegradation; Photoactivity; AgBr crystal; Morphology-dependent
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Large-scale preparation and morphology-dependent photodegradation performances of monodispersed AgBr crystals
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 455, 30 March 2013, Pages 199–205
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
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Price after discount Only $4.95
100% Money Back Guarantee
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