Plasmonic foam platforms for air quality monitoring

Plasmonic reversible gas sensors are of paramount importance for the monitoring of indoor environments. Herein, we design and engineer a plasmonic foam, with a high surface area, confined inside a capillary glass tube for the live monitoring of carbon monoxide (CO) in closed environments using surface-enhanced resonance Raman scattering. The illumination of the sensor with light during the flow of air allows the live monitoring of the concentration of atmospheric CO through surface-enhanced resonance Raman scattering. The sensor was prepared with a detection range from 10 to 40 ppm, due to health needs. The results show a sensitive, selective, reversible and robust sensor applicable to the monitoring of CO levels but also to other gas species upon appropriate functionalization.

Automated summary

Plasmonic reversible gas sensors are designed for live monitoring of carbon monoxide concentration in closed environments, with a detection range from 10 to 40 ppm. The sensor is sensitive, selective, reversible, and robust, and can be used for monitoring CO levels as well as other gas species with appropriate functionalization.