High-performance gas sensor array for indoor air quality monitoring: the role of Au nanoparticles on WO3, SnO2, and NiO-based gas sensors

The 3 × 3 gas sensor array with different metal oxides and morphologies is fabricated to compare the sensitization effects of Au nanoparticles on various metal oxides and gases.The 3 × 3 gas sensor array with different metal oxides and morphologies is fabricated to compare the sensitization effects of Au nanoparticles on various metal oxides and gases.