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| Type |
Symposium |
| Area |
Recent Trends in Physical and Analytical Electrochemistry |
| Room No. |
Room 320 |
| Time |
FRI 09:50-: |
| Code |
ELEC2-2 |
| Subject |
An Alternative Choice of the Glass Membrane pH Electrode: Nano-IrO2 Polymeric Composite pH Electrode |
| Authors |
Jongman Park
Department of Chemistry, Konkuk University, Korea |
| Abstract |
The main stream tool of practical pH sensing has not been changed from the glass membrane pH electrodes for more than half century. Excellency of the hydrogen ion selectivity of the glass membrane pH electrodes without alternative choices has being held the users in all the area of sciences and industries, although it is fragile, not easy to treat, and even expensive.
Metal oxide-based hydrogen ion film electrodes have been studied extensively for long time because of their high sensitivity to the hydrogen ion. However they are not satisfactory for practical uses due to the lack of stability, reproducibility, and severe drifts caused by the microscopic porosity, cracks or non-uniformity of the films formed during sputtering, thermal decomposition or electrochemical deposition.
Great efforts have been made to overcome such problems in the metal oxide-based pH electrodes utilizing the composite electrode technique. Various pH sensing materials, conductors, and matrices have been examined, and then finalized to nano-iridium oxide polymeric composite pH electrode as an alternative choice of the glass membrane pH electrode. In this symposium the ways of research in composite pH sensing electrode and efforts for real world pH sensing will be presented.
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| E-mail |
jmpark@konkuk.ac.kr |
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122nd General Meeting of the KCS