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Preparation of spindly CuO micro-particles for photodegradation of dye pollutants under a halogen tungsten lamp

Paper ID Volume ID Publish Year Pages File Format Full-Text
41221 45881 2011 8 PDF Available
Title
Preparation of spindly CuO micro-particles for photodegradation of dye pollutants under a halogen tungsten lamp
Abstract

Spindly cupric oxide (CuO) micro-particles were synthesized using Cu(NO3)2, hexamethylenetetramine, and NaOH solutions at 95 °C. The spindly CuO particles had a shape similar to a carambola of ∼1 μm in length and 300 nm in width. They were composed of nanosheets with a thickness of ∼5 nm. Such particles could be used in the photocatalytic degradation of rhodamine B in the presence of ∼0.01 M H2O2. Under irradiation by a 100 W halogen tungsten lamp, the CuO showed photocatalytic activities higher than those of P25 and commercially available CuO powder. They were very stable and could be recycled without considerable loss of activity. Other dye and organic pollutants such as methyl orange, methylene blue, erosin B, and p-nitrophenol could also be photodecomposed under identical conditions. These characteristics show the practical applications of the CuO particles in environmental remediation.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (233 K)Download as PowerPoint slideHighlights► Spindly CuO microparticles were prepared for the first time. ► They exhibited excellent photocatalytic activities under the visible-light. ► The particles could be used for the photodegradation of various dye pollutants. ► H2O2 was first introduced to enhance the photocatalytic activity of CuO.

Keywords
CuO; Spindly shape; Visible-light photocatalysis; Dye pollutants; Rhodamine B
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 406, Issues 1–2, 18 October 2011, Pages 51–58
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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100% Money Back Guarantee
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