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Photodegradation of 2,4-D over PdO/Al2O3–Nd2O3 photocatalysts prepared by the sol–gel method

Paper ID Volume ID Publish Year Pages File Format Full-Text
27196 44008 2012 6 PDF Available
Title
Photodegradation of 2,4-D over PdO/Al2O3–Nd2O3 photocatalysts prepared by the sol–gel method
Abstract

The photocatalytic activity of 1.0 wt% PdO supported on Al2O3–Nd2O3 binary oxides prepared by the sol–gel method was studied in the photodegradation of 2,4-dichlorophenoxyacetic acid (2,4-D). The photocatalysts were characterized by N2 physisorption, XRD and UV–vis spectroscopy. PdO supported on γ-Al2O3 photo-degrades the 2,4-D, however the addition of Nd2O3 to γ-Al2O3 notably improves the photocatalytic activity. As the concentration of Nd2O3 in the binary oxide increases from 2 to 10 wt%, the photodegradation of 2,4-D is highly enhanced. The catalytic test for PdO supported on pure Nd2O3 showed scarce photocatalytic activity. Total organic carbon (TOC) analysis showed that the 2,4-D has been completely destroyed on the PdO/Al2O3–Nd2O3 photocatalysts after 6 h under irradiation.

► PdO photocatalyst supported on (-Al2O3 photodegradate 2,4-D molecules. ► Addition of Nd2O3 to (-Al2O3 promotes the improvement in the photocatalytic activity. ► Photodegradation of 2,4-D is highly improved with 10 wt% of Nd2O3 content. ► 2,4-D has been completely destroyed after 6 h of UV irradiation.

Keywords
Photodegradation; 2,4-D herbicide; PdO/Al2O3–Nd2O3 sol–gel; N2 physisorption; XRD; UV–vis; FTIR
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Photodegradation of 2,4-D over PdO/Al2O3–Nd2O3 photocatalysts prepared by the sol–gel method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 227, Issue 1, 1 January 2012, Pages 45–50
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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