Oxygen Sensor Based on Oxygen-Sensitive Ruthenium Complex Immobilized on Silica-Ni-P Composite Coating

Silica-Ni-P composite coating is fabricated by dip-coating onto a 200-mesh copper-screen substrate. The sensing characteristics of the oxygen photosensor is studied withRu(bpy)3Cl2 as sensing element and Silica-Ni-P composite coating as support system. The sample coating has good repeatability, photostability, sensitivity, and good response to oxygen; it accords with Stern-Volmer equation during the oxygen concentration range 0%~20%.