Effective decoration of Pd nanoparticles on the surface of SnO2 nanowires for enhancement of CO gas-sensing performance

- Pd nanoparticles decoration on nanowire's surface was done via a simple route.
- The size and distribution of Pd nanoparticles was controlled by in situ reduction of the Pd complex.
- The coating Pd enhanced capable detection of hazardous CO gas of on-chip growth SnO2 nanowires.
- Pd-decorated SnO2 nanowires sensors have good stability to hazardous CO gas.