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Issue 18, 2013
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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

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Publication details

The article was received on 30 Nov 2012, accepted on 13 Feb 2013, published on 14 Feb 2013 and first published online on 14 Feb 2013


Article type: Paper
DOI: 10.1039/C3CP44303E
Citation: Phys. Chem. Chem. Phys., 2013,15, 6667-6672
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    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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