biostudies-literatureJeong SYNational Research Foundation of Korea (NRF)National Research Foundation of Korea233https://www.ebi.ac.uk/biostudies/studies/S-EPMC9877030biostudies-literatureUnknown14(1)The accurate detection and identification of volatile aromatic hydrocarbons, which are highly toxic pollutants, are essential for assessing indoor and outdoor air qualities and protecting humans from their sources. However, real-time and on-site monitoring of aromatic hydrocarbons has been limited by insufficient sensor selectivity. Addressing the issue, bilayer oxide chemiresistors are developed using Rh-SnO₂ gas-sensing films and catalytic CeO₂ overlayers for rapidly and cost-effectively detecting traces of aromatic hydrocarbons in a highly discriminative and quantitative manner, even in gas mixtures. The sensing mechanism underlying the exceptional performance of bilayer sensor is systematically elucidated in relation to oxidative filtering of interferants by the CNature communicationsExclusive detection of volatile aromatic hydrocarbons using bilayer oxide chemiresistors with catalytic overlayers.PMC98770302021M3H4A3A020864302021R1C1C2009461Moon YKJeong SYWang JLee JHfalseExclusive detection of volatile aromatic hydrocarbons using bilayer oxide chemiresistors with catalytic overlayers.The accurate detection and identification of volatile aromatic hydrocarbons, which are highly toxic pollutants, are essential for assessing indoor and outdoor air qualities and protecting humans from their sources. However, real-time and on-site monitoring of aromatic hydrocarbons has been limited by insufficient sensor selectivity. Addressing the issue, bilayer oxide chemiresistors are developed using Rh-SnO₂ gas-sensing films and catalytic CeO₂ overlayers for rapidly and cost-effectively detecting traces of aromatic hydrocarbons in a highly discriminative and quantitative manner, even in gas mixtures. The sensing mechanism underlying the exceptional performance of bilayer sensor is systematically elucidated in relation to oxidative filtering of interferants by the C2023-01-01T00:00:00Z2023 Jan2025-04-04T19:48:16.413Z2025-04-04T19:48:16.413ZS-EPMC98770303669739710.1038/s41467-023-35916-3