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Synthesis and characterization of phosphor and nitrogen co-doped titania

Paper ID Volume ID Publish Year Pages File Format Full-Text
48512 46510 2007 7 PDF Available
Title
Synthesis and characterization of phosphor and nitrogen co-doped titania
Abstract

Phosphor and nitrogen co-doped titania were prepared by a simple modified sol–gel method with hypophosphorous acid and ammonia as the P and N sources, respectively. The resulting materials were characterized by X-ray diffraction (XRD), nitrogen physical adsorption at 77 K, Fourier transformed infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and UV–vis spectroscopy. It was found that modification by phosphor could retard the phase transformation of anatase to rutile and increase the surface area significantly, while the doped nitrogen had little influence on the thermal stability and texture of the titania. The chemical nature of N and P was identified by XPS as NTiO and TiOP in the anatase TiO2 lattice. UV–vis spectra showed that modification by phosphor or nitrogen extended the spectral response of titania into the visible region. The photocatalytic activity of titania modified by only nitrogen was limited, much lower than that of phosphor-doped titania. However, when titania was co-doped with both phosphor and nitrogen, the photocatalytic activity was further enhanced efficiently.

Keywords
Titania; Phosphor; Nitrogen; Photocatalysis; 4-Chlorophenol (4CP)
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Synthesis and characterization of phosphor and nitrogen co-doped titania
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 76, Issues 1–2, 30 October 2007, Pages 196–202
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
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Any Questions? feel free to contact us