Development of a Low Cost Hemin based Dissolved Oxygen Sensor with Anti-Biofouling Coating for Water Monitoring

Conventional electrochemical dissolved oxygen (DO) sensors are expensive as they use Platinum in their construction. In addition, these sensors bio-foul when used in natural or wastewater, which leads to reduced sensitivity and variable performance. Here, we address these problems by i) replacing Platinum with Hemin as a low cost alternative for electrocatalysing the oxygen reduction reaction and ii) using silicone rubber (PDMS) functionalized …