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Photocatalytic removal of phenol and methylene-blue in aqueous media using TiO2@LDH clay nanocomposites

Paper ID Volume ID Publish Year Pages File Format Full-Text
53859 46987 2015 8 PDF Available
Title
Photocatalytic removal of phenol and methylene-blue in aqueous media using TiO2@LDH clay nanocomposites
Abstract

•TiO2@LDH nanocomposites were obtained by the deposition of anatase seeds on LDH-type clay materials.•Zn2+, Cu2+, Al3+, Fe3+ or Ti4+ cations were inserted within the LDH clay lattice.•Photoresponsive properties were observed in both UV and Vis range of the solar spectrum.•The TiO2@LDH nanocomposites are efficient for photodegradation reactions.

Herein, we report the formation of a series of nanocomposites composed of LDH structures and TiO2 with anatase crystal phase. The structure of the LDH clay was modulated by the insertion of different di-, tri- or tetravalent cations, such as Zn2+, Cu2+, Al3+, Fe3+ or Ti4+, within the brucite-like sheets. Afterwards, the anatase seeds were deposited onto the LDH clays, obtaining new nanocomposite systems with tailored photocatalytic activity. In this way, the photoresponsive properties of the final nanocomposites were shifted from the UV to the visible range of the solar spectrum. The obtained nanocomposites were tested for the degradation of different organic pollutants, like phenol and methylene blue, under UV and visible light in aqueous media with different pH. The kinetic study showed that the TiO2@LDH nanocomposites are efficient for the phenol (and its intermediary species catechol and hydroquinone) and methylene blue photocatalytic degradation under both UV and Vis light illumination.

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Keywords
TiO2@layered double hydroxides; Nanocomposites; Phenol; Methylene blue; Photocatalysis.
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Photocatalytic removal of phenol and methylene-blue in aqueous media using TiO2@LDH clay nanocomposites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 252, 1 September 2015, Pages 120–127
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