Routes to visible light active C-doped TiO2 photocatalysts using carbon atoms from the Ti precursors

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Title: Routes to visible light active C-doped TiO2 photocatalysts using carbon atoms from the Ti precursors
Authors: Sullivan, James A.
Neville, Elaine M.
Herron, Rory
Thampi, Ravindranathan
MacElroy, J. M. Don
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Date: Sep-2014
Online since: 2014-06-10T13:56:51Z
Abstract: In this work, different thermal treatments of titanium isopropoxide-derived photo-catalyst precursors, designed with the purpose of generating C-doped TiO2 photo-catalysts using carbon atoms present in the TiOx gel precursors as dopants, are presented. Specifically, these look at varying the standard calcination techniques using heat treatments in He (rather than calcination in air) and lower temperature calcinations (200 °C rather than 500 °C). The formed materials are characterised using N2 physisorption, XRD, UV Visible spectroscopy and XPS and their activities in promoting the oxidation of 4-chlorophenol under visible-light-only conditions were analysed. The nature of carbon remaining on the (or in the) material is discussed found to be both surface graphitic carbon and carbon present in anionic dopant positions. The different contributions of each type of carbon to the catalytic photo-activity under visible light are discussed.
Type of material: Journal Article
Publisher: Elsevier
Journal: Journal of Photochemistry and Photobiology A-Chemistry
Volume: 289
Copyright (published version): 2014 Elsevier
Keywords: C-doped TiO2Catalyst preparationPhotocatalysis
DOI: 10.1016/j.jphotochem.2014.05.009
Language: en
Status of Item: Peer reviewed
Appears in Collections:Chemistry Research Collection

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