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Evanescent wave broadband cavity enhanced absorption spectroscopy using supercontinuum radiation : a new probe of electrochemical processes
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Schnippering, Mathias, Unwin, Patrick R., Hult, Johan, Laurila, Toni, Kaminski, Clemens F., Langridge, Justin M., Jones, Roderic L., Mazurenka, Mikhail and Mackenzie, Stuart R. (2008) Evanescent wave broadband cavity enhanced absorption spectroscopy using supercontinuum radiation : a new probe of electrochemical processes. Electrochemistry Communications, Vol.10 (No.12). pp. 1827-1830. doi:10.1016/j.elecom.2008.09.014 ISSN 1388-2481.
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Official URL: http://dx.doi.org/10.1016/j.elecom.2008.09.014
Abstract
An evanescent wave variant of broadband cavity enhanced absorption spectroscopy using a supercontinuum light source has been used to detect electrogenerated species at the silica-water interface. In proof-of-concept experiments [IrCl6](2-) was produced by electro-oxidation of [IrCl6](3-) in a thin layer electrochemical cell. Diffusion of the Ir(IV) across the cell to a silica interface was monitored yielding real-time concentrations within an evanescent field region at the interface. The optical response was compared with the electrochemical response during chronoamperometric step and cyclic voltammetric experiments and both were simulated by finite element modeling. The experiment is highly sensitive to interfacial processes and its wide spectral width and fast time resolution make it a potentially powerful tool for in situ spectroscopic monitoring of processes and intermediates in dynamical electrochemistry. (C) 2008 Elsevier B.V. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Library of Congress Subject Headings (LCSH): | Spectrum analysis, Electrochemistry, Interfaces (Physical sciences), Absorption spectra | ||||
Journal or Publication Title: | Electrochemistry Communications | ||||
Publisher: | Elsevier Inc. | ||||
ISSN: | 1388-2481 | ||||
Official Date: | December 2008 | ||||
Dates: |
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Volume: | Vol.10 | ||||
Number: | No.12 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 1827-1830 | ||||
DOI: | 10.1016/j.elecom.2008.09.014 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Leverhulme Trust (LT), Engineering and Physical Sciences Research Council (EPSRC), Seventh Framework Programme (European Commission) (FP7), Suomen Akatemia [Academy of Finland], Suomen Kulttuurirahasto [Finnish Cultural Foundation], Natural Environment Research Council (Great Britain) (NERC) | ||||
Grant number: | EP/C00907X (EPSRC), EP/F028261/1 (EPSRC), EP/C012488/1 (EPSRC), PIEF-GA-2008-221538 (FP7) |
Data sourced from Thomson Reuters' Web of Knowledge
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