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Novel luminescent photocatalytic deNOx activity of CaAl2O4:(Eu, Nd)/TiO2−xNy composite

Paper ID Volume ID Publish Year Pages File Format Full-Text
46937 46453 2011 6 PDF Available
Title
Novel luminescent photocatalytic deNOx activity of CaAl2O4:(Eu, Nd)/TiO2−xNy composite
Abstract

The systematic experiments of photocatalytic degradation of NO gas were carried out by using novel composites containing TiO2−xNy loaded on a long afterglow phosphor, CaAl2O4:(Eu, Nd). The composites were prepared in a sequence of procedures, which involved reactions of TiCl3 and hexamethylenetetramine (HMT) mixed solution at 190 °C for 2 h to precipitate nano-size TiO2−xNy particles, followed by mixing the TiO2−xNy with a micro-size CaAl2O4:(Eu, Nd) particles by a soft planetary ball milling to yield CaAl2O4:(Eu, Nd)/TiO2−xNy composites. Photocatalytic degradation of NO was monitored both under UV light irradiation and in the dark after turning off the light. The composite displayed excellent photocatalytic activity under UV-light irradiation as well as persistent activity after turning off light. A promising strategy involves coupling of visible light responsive photocatalyst with long afterglow phosphor was established. It is a new concept for the photocatalyst synthesis implying a possibility of a novel persistent active photocatalytic system.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights• We firstly developed an effective full-time active luminescent photocatalyst system. • It is a new concept for the photocatalyst synthesis and application. • The composite displayed excellent photocatalytic deNOx activity under UV-light irradiation as well as persistent activity after turning off light. • A promising strategy involves coupling of visible light responsive photocatalyst with long afterglow phosphor was established.

Keywords
Luminescent photocatalyst; DeNOx; Composite; Persistent photocatalytic system
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Novel luminescent photocatalytic deNOx activity of CaAl2O4:(Eu, Nd)/TiO2−xNy composite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 106, Issues 3–4, 11 August 2011, Pages 586–591
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