One-pot synthesis of Pd-loaded SnO₂ yolk-shell nanostructures for ultraselective methyl benzene sensors

A continuous, single-step, and large-scale preparation of Pd-catalyst-loaded SnO₂ yolk-shell spheres is demonstrated. These nanostructures show an unusually high response and selectivity to methyl benzenes, such as xylene and toluene, with very low cross-responses to various interfering gases, making them suitable for precise monitoring of indoor air quality. A yolk with many shells: A continuous, single-step, and large-scale preparation of Pd-catalyst-loaded SnO₂ yolk-shell spheres is demonstrated (see figure). These nanostructures show an unusually high response and selectivity to methyl benzenes, such as xylene and toluene, with very low cross-responses to various interfering gases, making them suitable for precise monitoring of indoor air quality.