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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/37376

Title: Energy and electron transfer reactions on silica gel and titania-silica mixed oxide surfaces
Authors: Vancea, Anisoara
Kirkpatrick, Iain
Worrall, David R.
Williams, Sian L.
Keywords: Silica
Titania
Photocatalysis
Energy / electron transfer
Diffusion
Reflectance
Issue Date: 2019
Publisher: Springer Verlag
Citation: VANCEA, A. ... et al., 2019. Energy and electron transfer reactions on silica gel and titania-silica mixed oxide surfaces. Research on Chemical Intermediates, In Press.
Abstract: The energy and electron transfer reactions of anthracene co-adsorbed with an electron donor on silica gel and titania-silica mixed oxides have been studied by a combination of steady state reflectance, emission spectroscopy, and nanosecond diffuse reflectance laser flash photolysis. Bimolecular rate constants for energy and electron transfer between anthracene and azulene have been measured; kinetic analysis of the decay of the anthracene triplet state and radical cation show that the kinetic parameters depend on the titania content of the sample and the azulene loading. The rate of energy and electron transfer reactions increases as a function of azulene loading and decreases with increasing titania content in titania-silica mixed oxides. These findings indicate that the observed rate of reaction is determined by the rate of diffusion of anthracene on the titania-silica surfaces whereas, in contrast, the observed rate of reaction on silica gel is predominantly governed by the rate of diffusion of azulene.
Description: This paper is in closed access until 12 months after publication.
Sponsor: The authors would like to thank EPSRC for funding this project.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/37376
Publisher Link: https://link.springer.com/journal/11164
ISSN: 0922-6168
Appears in Collections:Closed Access (Chemistry)
Closed Access (Aeronautical and Automotive Engineering)

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