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Ozonation of model organic compounds catalysed by nanostructured cerium oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
47009 46455 2011 10 PDF Available
Title
Ozonation of model organic compounds catalysed by nanostructured cerium oxides
Abstract

Cerium oxides prepared by the precipitation method and hydrothermal synthesis, with distinct morphologies and particle size, were tested as catalysts in the ozonation of selected organic compounds. Oxalic acid, aniline and a reactive dye were used as representative of organic pollutants. In the case of oxalic acid, an increase in the catalytic activity with the increase of the percentage of Ce(III) on the surface was observed. Both single and catalytic ozonation allowed the total removal of aniline after 30 min of reaction; the cerium oxide prepared by the precipitation method was the best catalyst for promoting the mineralization of aniline solutions. TOC removals close to 100% were obtained in all cases when cerium oxides were used as catalysts in the ozonation of the reactive dye tested.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► Nanoflower, nanocube and nanoparticles ceria-shaped catalysts. ► Nanocatalysts for ozonation of organic compounds in water. ► The nanostructure determines the concentration of surface redox couple sites. ► Nanoparticle and nanocube shaped ceria performed best for ozonation of oxalic acid.

Keywords
Cerium oxide; Nanocube; Nanoparticles; Nanostructure; Catalytic ozonation
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Ozonation of model organic compounds catalysed by nanostructured cerium oxides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 103, Issues 1–2, 14 March 2011, Pages 190–199
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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