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Issue 14, 2013
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Scanning electrochemical microscopy at variable temperatures

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Abstract

All chemical reactions are influenced by temperature, however, temperature is usually not considered an important parameter which has to be varied or at least controlled in SECM measurements. A precise temperature-control unit was designed and integrated into a SECM setup which allows setting the temperature of the sample and the adjacent electrolyte in a range between 0 and 100 °C without causing convection. Data acquisition was synchronized with the current pulses through the Peltier element to decrease the noise and keep the tip-to-sample distance constant during imaging. SECM images in the feedback mode, generator collector mode and the redox competition mode for model samples such as an enzyme entrapped within a polymer spot or oxygen reduction catalysts demonstrate the importance of controlling temperature as well as performing SECM experiments at predefined and constant increased temperature.

Graphical abstract: Scanning electrochemical microscopy at variable temperatures

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Publication details

The article was received on 06 Oct 2012, accepted on 10 Jan 2013 and first published on 11 Jan 2013


Article type: Paper
DOI: 10.1039/C3CP43520B
Citation: Phys. Chem. Chem. Phys., 2013,15, 5215-5223
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    Scanning electrochemical microscopy at variable temperatures

    D. Schäfer, A. Puschhof and W. Schuhmann, Phys. Chem. Chem. Phys., 2013, 15, 5215
    DOI: 10.1039/C3CP43520B

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