Ag decorated SnO2 nanoparticles to enhance formaldehyde sensing properties

The response of the 3.7 wt% Ag-SnO2 composite exhibits response 7 times higher than pristine SnO2 to 10 ppm formaldehyde at 125 °C and good selectivity to other frequently encountered VOCs in indoor environments, and also has good stability, so, the composite is a promising material to detect trace harmful VOCs over other frequently encountered in indoor environments.223