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Photodegradation of phenol in a polymer-modified TiO2 semiconductor particulate system under the irradiation of visible light

Paper ID Volume ID Publish Year Pages File Format Full-Text
52860 46890 2007 5 PDF Available
Title
Photodegradation of phenol in a polymer-modified TiO2 semiconductor particulate system under the irradiation of visible light
Abstract

Preparation methods and photocatalytic activity of the photocatalyst nanometer TiO2/poly-(fluorene-co-thiophene) (PFT) were studied under GaI3 lamp irradiation in the present research. The degradation rate of phenol using the target photocatalyst was much higher than it was using TiO2/rhodamine B. Diffuse reflectance spectra showed that the absorbance range of TiO2/PFT was expanded from 387 nm (TiO2) to about 500 nm, and fluorescent emission spectra showed that the spectral shape of TiO2/PFT was identical with that of pure PFT. The fluorescent quantum efficiency of TiO2/PFT was estimated at 3.8% while that of PFT film was about 14.7%, which indicated that electrons transferred from the PFT into the conduction band of TiO2.

Keywords
Photodegradation; Nanometer TiO2; Conjugated polymer; Photosensitizer; Visible light
First Page Preview
Photodegradation of phenol in a polymer-modified TiO2 semiconductor particulate system under the irradiation of visible light
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 3, March 2007, Pages 429–433
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis