Lead confinement and fluorimetric detection using zeolites: towards a rapid and cost-effective detection of lead in water

Abstract Metal clusters stabilized in zeolites have emerged as promising candidates for optoelectronic applications due to their remarkable luminescent properties. These optical properties have been exploited to develop fast and highly sensitive methods for optical sensing in environmental monitorin...

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Bibliographic Details
Published in:JPhys photonics 2021-07, Vol.3 (3), p.34003
Main Authors: Moreno-Torres, José Adán, Flores-Acosta, Mario, Ramírez-Bon, Rafael, Coutino-Gonzalez, Eduardo
Format: Article
Language:English
Subjects:
Dehydration
Environmental monitoring
F9 zeolites
fluorimetric sensor
heavy metals ions
Lead
lead clusters
Luminescence
Metal clusters
Optical properties
Optoelectronics
water pollution
Zeolites
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Summary:Abstract Metal clusters stabilized in zeolites have emerged as promising candidates for optoelectronic applications due to their remarkable luminescent properties. These optical properties have been exploited to develop fast and highly sensitive methods for optical sensing in environmental monitoring. However, to date, these materials have not been proposed as a detection method based on their luminescent response for sensing toxic metal ions. In this report, we synthesized luminescent lead (Pb) clusters into the cavities of synthetic F9-NaX zeolites, which were used as scaffolds to confine and detect Pb 2+ ions in water through a fluorimetric mode. These Pb-F9 samples display an intense cyan emission in dehydrated form. Also, a correlation between the luminescence intensity of the materials and the lead loadings was observed, obtaining a low limit of detection of 1.248 ppb and a limit of quantification of 3.782 ppb. The results clearly demonstrate the potential of luminescent lead-exchanged F9 zeolites as one-step method for lead monitoring in water using a rapid and low-cost strategy.
ISSN:2515-7647
2515-7647
DOI:10.1088/2515-7647/abf945