1. Plasmonic foam platforms for air quality monitoring
- Author
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A. L. González, I. Brian Becerril-Castro, Ana B. Castro-Ceseña, José M. Romo-Herrera, Franklin Muñoz-Muñoz, and Ramon A. Alvarez-Puebla
- Subjects
Materials science ,Capillary action ,business.industry ,technology, industry, and agriculture ,Resonance ,Air quality monitoring ,chemistry.chemical_compound ,symbols.namesake ,chemistry ,symbols ,Optoelectronics ,Surface modification ,General Materials Science ,business ,Raman scattering ,Plasmon ,Carbon monoxide ,Glass tube - Abstract
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.
- Published
- 2021