Screen-printed Dissolved Oxygen Sensor Based on Cerium Oxide-supported Silver Catalyst and Polydimethylsiloxane Film

Abstract

A screen-printed dissolved oxygen sensor was fabricated using cerium oxide-supported silver catalyst and polydimethylsiloxane (PDMS) film. A PDMS film of 3 μm thickness showed good permeability for oxygen and impermeability for hydrogen peroxide. The calibration curve has shown a linear relationship with a correlation coefficient of 0.996 for the dissolved oxygen concentration. The sensitivity and detection limit of the present sensor were calculated at –158 μA mM⁻¹ and 8.4 μM, respectively.