利用复合化学镀方法在200目铜网上固定硅胶颗粒，得到了Silica-Ni-P的复合化学镀层，并研究了以它为支持体系，以[Ru(bpy)3]Cl2为敏感物质的光学氧传感器的响应特性。该敏感镀层具有良好的稳定性、重现性和灵敏度，对气态氧有着较好的响应，在低浓度范围内(0%～20%)符合Stern-Volmer方程。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 with [Ru(bpy)3]Cl2 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%.