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Synthesis of highly active H2O2-sensitized sulfated titania nanoparticles with a response to visible light

Paper ID Volume ID Publish Year Pages File Format Full-Text
28268 44067 2009 8 PDF Available
Title
Synthesis of highly active H2O2-sensitized sulfated titania nanoparticles with a response to visible light
Abstract

In this paper, we reported the synthesis of sulfated TiO2 sensitized with hydrogen peroxide. These prepared TiO2 showed high photocatalytic activity under the visible light (λ > 420 nm). X-ray diffraction (XRD), transmission electron micrograph (TEM), UV–vis diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy (FT-IR), BET N2 adsorption and X-ray photoelectron spectroscopy (XPS) were employed to characterize the properties of the synthesized TiO2. The results indicated that anatase TiO2 with strong surface acidity was obtained. The photocatalytic activity of sulfated TiO2 was compared with that of the commercially available Degussa P25 titanium dioxide by degrading methyl orange (MO) aqueous solutions. The degradation of MO on sulfated TiO2 under optimal calcining conditions was significantly faster than that on the P25. The active sulfates anchoring on the surface of TiO2, Ti ions in a tetrahedral coordination and the strong vis absorption may mainly contribute to the high photocatalytic activity of sulfated TiO2 sensitized with hydrogen peroxide under the visible light.

Keywords
Sulfated TiO2; Hydrogen peroxide; Visible light; Surface acidity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 202, Issues 2–3, 25 February 2009, Pages 128–135
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
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