Enhanced acetone gas-sensing characteristics of Pd–NiO nanorods/SnO₂ nanowires sensors

The ternary component consisting of SnO2 nanowires/Pd–NiO nanorods is employed to enhance the acetone gas sensor performance utilizing the synergistic effects of the p–n heterojunction between the p-type NiO and the n-type SnO2, as well as the catalytic spillover effect of Pd nanoparticles.