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Visible-light driven TiO2 photocatalysts from Ti-oxychloride precursors

Paper ID Volume ID Publish Year Pages File Format Full-Text
29071 44118 2008 8 PDF Available
Title
Visible-light driven TiO2 photocatalysts from Ti-oxychloride precursors
Abstract

Series of nanosized anion-containing TiO2-base materials with anatase-type structure were synthesized from N, Cl-containing precursors using two preparation methods, calcination and hydrotreatment. Samples were conditioned by a final calcination step in order to get free of surface anion impurities and their structural properties characterized by a combined X-ray diffraction (XRD), scanning (SEM) and transmission (TEM) microscopy, X-ray energy dispersive (XEDS), X-ray photoelectron (XPS), and diffuse reflectance infrared Fourier transform (DRIFTS) study. The structural characterization was used to interpret the UV–vis spectra. The resulting joint information allowed the rationalization of the photocatalytic activity observed for the visible-light-assisted liquid-phase degradation of phenol. We founded that maximization of photoactivity is not related with the net absorption power of our systems in the visible range but mostly driven by a combination of two characteristics; the adequate morphological properties and the presence of negatively charged N-containing species.

Keywords
Photocatalysis; Calcination; Hydrothermal; TiO2; Anatase; N-doping and impurity; Visible light; Sunlight; Pollutant elimination and degradation
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Visible-light driven TiO2 photocatalysts from Ti-oxychloride precursors
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 199, Issues 2–3, 25 September 2008, Pages 136–143
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