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Issue 18, 2013

In situ determination of the surface excess upon electrochemical sulfate adsorption on Au(111) films by surface plasmon resonance

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Abstract

For the independent and simultaneous characterization of electrochemical processes, we employ surface plasmon resonance (SPR) detection together with standard electrochemical methods. As a first test system we studied sulfate adsorption on Au(111). After careful calibration of the SPR signal we obtained submonolayer sensitivity on a millisecond time scale. The experimental data are simulated within the framework of a layer stack model of the optical interface. The sulfate adsorbate is simply described, employing the optical properties of sulfuric acid. The obtained potential dependent sulfate coverage is in reasonable agreement with independent results as presented in the literature.

Graphical abstract: In situ determination of the surface excess upon electrochemical sulfate adsorption on Au(111) films by surface plasmon resonance

Article information


Submitted
30 Nov 2012
Accepted
13 Feb 2013
First published
14 Feb 2013

Phys. Chem. Chem. Phys., 2013,15, 6667-6672
Article type
Paper

In situ determination of the surface excess upon electrochemical sulfate adsorption on Au(111) films by surface plasmon resonance

A. E. Timm, D. Nattland and R. Schuster, Phys. Chem. Chem. Phys., 2013, 15, 6667 DOI: 10.1039/C3CP44303E

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