Preparation of iridium oxide and its application in sensor-actuator systems

Share/Save/Bookmark

Olthuis, W. and Kerkhof van, J.C. and Bergveld, P. and Bos, M. and Linden van der, W.E. (1991) Preparation of iridium oxide and its application in sensor-actuator systems. Sensors and Actuators B: Chemical, 4 (1-2). pp. 151-156. ISSN 0925-4005

[img]
Preview
PDF
507Kb
Abstract:Acid or base concentrations can be determined by coulometric titration. A new all-iridium oxide sensor-actuator device is presented, of which the titrant is generated by a reversible redox reaction occurring in the electroactive iridium oxide actuator electrode, and the equivalence point in the titration curve is detected by the pH-sensitive iridium oxide sensor. The advantage with respect to the formerly used noble metal actuator electrode/ISFET sensor device is twofold: on the one hand, interference of Cl− ions, which oxidize at the noble metal actuator electrode during titration, is avoided and on the other hand, the preparation of the all-iridium oxide device is easier than of the ISFET-based devices. In addition to the conventional potential sweep method of oxide growth, a new current-pulse method is proposed, of which the parameters for optimal growth depend less on the pH of the solution.
Item Type:Article
Copyright:© 1991 Elsevier
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:http://purl.utwente.nl/publications/72985
Official URL:http://dx.doi.org/10.1016/0925-4005(91)80191-L
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page

Metis ID: 112170