Utilizing ZnO Nanorods for CO gas detection by SPR technique

Detection of Carbon Monoxide gas is very vital issue in the environment. This study demonstrates a simple technique to detect Carbon Monoxide gas by Plasmon resonance peak shift in gold nanoparticles (NPs) coated on ZnO nanorods that are grown on the SiO2 surface. The structure is used to sense very low concentrations of CO gas (From 1 ppm to 15 ppm). Coating the NPs on to Zno Nanorods increases the surface-to-volume ratio and hence enhances the device sensitivity. This result allows to make a simple and precise sensor with quick and high response.