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Enhanced visible-light photocatalytic activity in K0.81Ti1.73Li0.27O4/TiO2−xNy sandwich-like composite

Paper ID Volume ID Publish Year Pages File Format Full-Text
47619 46478 2010 5 PDF Available
Title
Enhanced visible-light photocatalytic activity in K0.81Ti1.73Li0.27O4/TiO2−xNy sandwich-like composite
Abstract

A lepidocrocite-type tianate, K0.81Ti1.73Li0.27O4, was coupled with TiO2−xNy by a hydrothermal method in order to give the visible-light responsiveness. After treating K0.81Ti1.73Li0.27O4 in a HCl aqueous solution to peel off and/or split the titanate plates, nano-sized nitrogen doped titania particles were added to form a sandwich-like bridging structure possessing high specific surface area and porosity. The prepared K0.81Ti1.73Li0.27O4/TiO2−xNy sandwich-like composite showed excellent photocatalytic activity for the decomposition of NOx gas under both visible-light and UV light irradiation (λ > 510, 400, 290 nm), being superior to that of TiO2−xNy or commercial TiO2 (AEROXIDE® TiO2 P 25) powders.

Graphical abstractA sandwich-like composite was obtained by incorporating TiO2−xNy nanoparticles into the cracks of K0.81Ti1.73Li0.27O4 plate-like particles. The specific surface area together with the porosity were increased, and the photocatalytic activity in deNOx reaction was significantly enhanced especially under irradiation of visible-light with the wavelength λ > 510 nm.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Photocatalyst; Titanate; Nitrogen doped titania; Coupled catalyst; DeNOx
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Enhanced visible-light photocatalytic activity in K0.81Ti1.73Li0.27O4/TiO2−xNy sandwich-like composite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 93, Issues 3–4, 12 January 2010, Pages 299–303
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