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Open AccessArticle

Developing a CNT-SPE Sensing Platform Based on Green Synthesized AuNPs, Using Sargassum sp.

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Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro, Querétaro 76230, Mexico
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Posgrado en Ciencia e Ingeniería de Materiales, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro, Querétaro 76230, Mexico
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Instituto de Ingeniería, Universidad Nacional Autónoma de México, Edificio 17, Ciudad Universitaria, Coyoacán 04510, Mexico
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Author to whom correspondence should be addressed.
Sensors 2020, 20(21), 6108; https://doi.org/10.3390/s20216108
Received: 22 September 2020 / Revised: 26 October 2020 / Accepted: 26 October 2020 / Published: 27 October 2020
(This article belongs to the Section Sensor Materials)
Detection and quantification of diverse analytes such as molecules, cells receptor and even particles and nanoparticles, play an important role in biomedical research, particularly in electrochemical sensing platform technologies. In this study, gold nanoparticles (AuNPs) prepared by green synthesis from Sargassum sp. were characterized using ultraviolet-visible (UV-Vis) and Fourier transform-infrared (FT-IR) spectroscopies, X-ray diffraction (XRD), scanning electron microscopy (SEM), dynamic light scattering (DLS) and zeta potential (ζ) obtaining organic capped face-centered cubic 80–100 nm AuNPs with an excellent stability in a wide range of pH. The AuNPs were used to modify a carbon nanotubes-screen printed electrode (CNT-SPE), through the drop-casting method, to assemble a novel portable electrochemical sensing platform for glucose, using a novel combination of components, which together have not been employed. The ability to sense and measure glucose was demonstrated, and its electrochemical fundamentals was studied using cyclic voltammetry (CV). The limits of detection (LOD) and quantification (LOQ) to glucose were 50 μM and 98 μM, respectively, and these were compared to those of other sensing platforms. View Full-Text
Keywords: carbon nanotubes-screen printed electrodes; electrochemistry; Sargassum sp.; green synthesis; nanoparticles; sensing platform carbon nanotubes-screen printed electrodes; electrochemistry; Sargassum sp.; green synthesis; nanoparticles; sensing platform
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MDPI and ACS Style

González-Fuentes, F.J.; Molina, G.A.; Silva, R.; López-Miranda, J.L.; Esparza, R.; Hernandez-Martinez, A.R.; Estevez, M. Developing a CNT-SPE Sensing Platform Based on Green Synthesized AuNPs, Using Sargassum sp. Sensors 2020, 20, 6108. https://doi.org/10.3390/s20216108

AMA Style

González-Fuentes FJ, Molina GA, Silva R, López-Miranda JL, Esparza R, Hernandez-Martinez AR, Estevez M. Developing a CNT-SPE Sensing Platform Based on Green Synthesized AuNPs, Using Sargassum sp. Sensors. 2020; 20(21):6108. https://doi.org/10.3390/s20216108

Chicago/Turabian Style

González-Fuentes, Fanny J.; Molina, Gustavo A.; Silva, Rodolfo; López-Miranda, José L.; Esparza, Rodrigo; Hernandez-Martinez, Angel R.; Estevez, Miriam. 2020. "Developing a CNT-SPE Sensing Platform Based on Green Synthesized AuNPs, Using Sargassum sp." Sensors 20, no. 21: 6108. https://doi.org/10.3390/s20216108

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