Desarrollo y evaluación de un sensor portátil para la detección de Hg2+, a través de la síntesis verde de AuNP utilizando extracto acuoso de Sargassum spp.
Mundo Nano. Revista Interdisciplinaria en Nanociencias y Nanotecnología, ISSN: 2007-5979, Vol: 16, Issue: 31, Page: 1e-17e
2023
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Metrics Details
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Article Description
RESUMEN El presente trabajo tiene la finalidad de dar a conocer el desarrollo de un prototipo de sensor para la medición de mercurio (Hg2+) en solución acuosa sobre una plataforma electroquímica basada en electrodos serigrafiados de nanotubos de carbonos (CNT-SPE) en conjunto con nanopartículas de oro (NPs-Au) realizadas a través de síntesis verde, utilizando extracto acuoso de Sargassum spp. Para esto, se realizó la caracterización de las NPs-Au por espectroscopía ultravioleta-visible (UV-Vis), infrarrojo (TF-IR), difracción de rayos X (DRX) y microscopía electrónica de barrido (SEM); obteniendo nanopartículas entre 80-100 nm las cuales poseen un recubrimiento orgánico que les confiere una sinergia al momento de ser conjugadas con CNT-SPE oxidadas/activadas. Posteriormente, las NPs-Au se utilizaron para modificar el CNT-SPE a través del método drop-casting y así ensamblar un novedoso sensor electroquímico para la medición de Hg2+, cuya validación y habilidad para medir fue demostrada utilizando voltametría diferencial de pulso (DPV). Se obtuvieron límites de detección de 2.38 𝜇M y cuantificación de 3 𝜇M. Los resultados demuestran que la plataforma desarrollada es una alternativa, rápida, eficiente y portátil para la medición de Hg2+.
Bibliographic Details
http://www.mundonano.unam.mx/ojs/index.php/nano/article/view/69774; http://dx.doi.org/10.22201/ceiich.24485691e.2023.31.69774; http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2448-56912023000200103&lng=en&tlng=en; http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S2448-56912023000200103&lng=en&tlng=en; http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2448-56912023000200103; http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S2448-56912023000200103; https://dx.doi.org/10.22201/ceiich.24485691e.2023.31.69774; https://www.mundonano.unam.mx/ojs/index.php/nano/article/view/69774
Universidad Nacional Autonoma de Mexico
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