Next Article in Journal
Optimization of Anodized-Aluminum Pressure-Sensitive Paint by Controlling Luminophore Concentration
Previous Article in Journal
Intelligent Chiral Sensing Based on Supramolecular and Interfacial Concepts
Article Menu

Export Article

Open AccessArticle
Sensors 2010, 10(7), 6821-6835;

Voltammetry under a Controlled Temperature Gradient

BVT Technologies, a.s., Hudcova 533/78c, 612 00 Brno, Czech Republic
Author to whom correspondence should be addressed.
Received: 30 May 2010 / Revised: 20 June 2010 / Accepted: 1 July 2010 / Published: 14 July 2010
(This article belongs to the Section Chemical Sensors)
Full-Text   |   PDF [572 KB, uploaded 21 June 2014]   |  


Electrochemical measurements are generally done under isothermal conditions. Here we report on the application of a controlled temperature gradient between the working electrode surface and the solution. Using electrochemical sensors prepared on ceramic materials with extremely high specific heat conductivity, the temperature gradient between the electrode and solution was applied here as a second driving force. This application of the Soret phenomenon increases the mass transfer in the Nernst layer and enables more accurate control of the electrode response enhancement by a combination of diffusion and thermal diffusion. We have thus studied the effect of Soret phenomenon by cyclic voltammetry measurements in ferro/ferricyanide. The time dependence of sensor response disappears when applying the Soret phenomenon, and the complicated shape of the cyclic voltammogram is replaced by a simple exponential curve. We have derived the Cotrell-Soret equation describing the steady-state response with an applied temperature difference. View Full-Text
Keywords: Soret phenomenon; electrochemical sensor; thermal diffusion; cyclic voltammetry Soret phenomenon; electrochemical sensor; thermal diffusion; cyclic voltammetry

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Krejci, J.; Sajdlova, Z.; Krejci, J., Jr.; Marvanek, T. Voltammetry under a Controlled Temperature Gradient. Sensors 2010, 10, 6821-6835.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top