Plasmonic foam platforms for air quality monitoring.

Nanoscale

Centro de Nanociencias y Nanotecnología, UNAM, Km 107 Carretera Tijuana-Ensenada, C.P. 22800, Ensenada, B.C., Mexico.

Published: January 2021

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.

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Source
http://dx.doi.org/10.1039/d0nr07686dDOI Listing

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