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Sunlight photocatalytic activity of polypyrrole–TiO2 nanocomposites prepared by ‘in situ’ method

Paper ID Volume ID Publish Year Pages File Format Full-Text
52120 46865 2008 5 PDF Available
Title
Sunlight photocatalytic activity of polypyrrole–TiO2 nanocomposites prepared by ‘in situ’ method
Abstract

A series of polypyrrole–TiO2 (PPy–TiO2) nanocomposites with different PPy:TiO2 ratios were prepared by ‘in situ’deposition oxidative polymerization of pyrrole hydrochloride using ferric chloride (FeCl3) as oxidant in the presence of ultra fine grade power of anatase TiO2 cooled in an ice bath. The samples were characterized by means of TEM, XRD, XPS and UV–vis-diffuse reflectance spectroscope. Their photocatalytic activities were evaluated by photocatalytic degradation of methyl orange aqueous solution under sunlight. PPy–TiO2 nanocomposites show better photocatalytic activity than that of neat TiO2 nanoparticles, which is partly attributed to the sensitizing effect of polypyrrole.

Keywords
PPy–TiO2 nanocomposites; TiO2 nanoparticles; Methyl orange; Photocatalytic activity; Sunlight
First Page Preview
Sunlight photocatalytic activity of polypyrrole–TiO2 nanocomposites prepared by ‘in situ’ method
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 6, 31 March 2008, Pages 1162–1166
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis