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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/4937

    Título
    Carbon nanostructured films modified by metal nanoparticles supported on filtering membranes for electroanalysis
    Autor
    Páramo Martín, Ana EricaAutoridad UBU
    Palmero Díaz, SusanaAutoridad UBU Orcid
    Heras Vidaurre, AránzazuAutoridad UBU Orcid
    Colina Santamaría, ÁlvaroAutoridad UBU Orcid
    Publicado en
    Talanta. 2018, V. 178, p. 736-742
    Editorial
    Elsevier
    Fecha de publicación
    2018-02
    ISSN
    0039-9140
    DOI
    10.1016/j.talanta.2017.10.019
    Resumen
    A novel methodology to prepare sensors based on carbon nanostructures electrodes modified by metal nanoparticles is proposed. As a proof of concept, a novel bismuth nanoparticle/carbon nanofiber (Bi-NPs/CNF) electrode and a carbon nanotube (CNT)/gold nanoparticle (Au-NPs) have been developed. Bi-NPs/CNF films were prepared by 1) filtering a dispersion of CNFs on a polytetrafluorethylene (PTFE) filter, and 2) filtering a dispersion of Bi-NPs chemically synthesized through this CNF/PTFE film. Next the electrode is prepared by sticking the Bi-NPs/CNF/PTFE film on a PET substrate. In this work, Bi-NPs/CNF ratio was optimized using a Cd2+ solution as a probe sample. The Cd anodic stripping peak intensity, registered by differential pulse anodic stripping voltammetry (DPASV), is selected as target signal. The voltammograms registered for Cd stripping with this Bi-NPs/CNF/PTFE electrode showed well-defined and highly reproducible electrochemical. The optimized Bi-NPs/CNF electrode exhibits a Cd2+ detection limit of 53.57 ppb. To demonstrate the utility and versatility of this methodology, single walled carbon nanotubes (SWCNTs) and gold nanoparticles (Au-NPs) were selected to prepare a completely different electrode. Thus, the new Au-NPs/SWCNT/PTFE electrode was tested with a multiresponse technique. In this case, UV/Vis absorption spectroelectrochemistry experiments were carried out for studying dopamine, demonstrating the good performance of the Au-NPs/SWCNT electrode developed.
    Palabras clave
    Carbon nanofibers electrodes
    Single-walled carbon nanotubes electrodes
    Bismuth nanoparticles
    Gold nanoparticles
    Electroanalysis
    Materia
    Química analítica
    Chemistry, Analytic
    URI
    http://hdl.handle.net/10259/4937
    Versión del editor
    https://doi.org/10.1016/j.talanta.2017.10.019
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    • Artículos GAIN
    Attribution-NonCommercial-NoDerivatives 4.0 International
    Documento(s) sujeto(s) a una licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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    Nombre:
    Talanta2018_NPsBi.pdf
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    178.5Kb
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