Fabrication of Iridium Oxide Screen Printed pH Sensor for Microbial Induced Corrosion Monitoring Application

The aim of this project is to fabricate a pH sensor using a screen printed
electrode by electrodeposition method. In order to achieve this, a iridium oxide film
will be coated on the working electrode of the electrode. With a very small size
electrode, it very convenient to be used and it can produce potential response s by
electrochemical reaction due to it sensitivity to surrounding pH levels. The versatility
of iridium oxide as pH sensors from past research study showed it promising in
detecting potential response with a Near-Nernstian reaction in consistent and
repeatability at range between −69.9mV/pH and −74.5 mV/pH for pH values ranges
from 2 to 12 at temperature of 25 ◦C. The approach to fabricating the pH sensor in this
project is by utilizing electrodeposition technique.