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Degradation of trichloroethylene using highly adsorptive allophane–TiO2 nanocomposite

Paper ID Volume ID Publish Year Pages File Format Full-Text
47112 46459 2011 5 PDF Available
Title
Degradation of trichloroethylene using highly adsorptive allophane–TiO2 nanocomposite
Abstract

A highly adsorptive allophane–TiO2 nanocomposite photocatalyst was prepared by dispersing nanoparticles of the natural clay mineral allophane into a titanium alkoxide solution by the sol–gel method. During the photocatalytic degradation of trichloroethylene using the allophane–TiO2 nanocomposite, emission of the intermediate product, phosgene, was drastically inhibited. Trichloroethylene was transformed into the intermediate products, phosgene and dichloroacetyl chloride, on the TiO2 during the UV irradiation. These compounds are rapidly adsorbed on the allophane. The compounds then gradually degraded after diffusing to the TiO2.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ A highly adsorptive allophane–TiO2 nanocomposite was prepared by the sol–gel method. ▶ Phosgene emission was drastically inhibited during the trichloroethylene degradation. ▶ Trichloroethylene was transformed into phosgene on the TiO2 during UV irradiation. ▶ The phosgene was rapidly adsorbed on the allophane. ▶ The phosgene then gradually degraded after diffusing to the TiO2.

Keywords
Allophane; Titanium dioxide; Photocatalysis; Trichloroethylene; Adsorption
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Degradation of trichloroethylene using highly adsorptive allophane–TiO2 nanocomposite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 102, Issues 3–4, 22 February 2011, Pages 470–474
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
Online Support
Any Questions? feel free to contact us