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A new class of porous silicon electrochemical transducers built from pyrolyzed polyfurfuryl alcohol

  • Datos identificativos

    Identificador: imarina:9366487
    Autores:
    Rajendran, AAGuo, KYAlvarez-Fernandez, AGengenbach, TRVelasco, MBFornerod, MJShafique, KFüredi, MFormentín, PHaji-Hashemi, HGuldin, SVoelcker, NHCetó, XPrieto-Simón, B
    Resumen:
    Carbon-based nanomaterials are key to developing high-performing electrochemical sensors with improved sensitivity and selectivity. Nonetheless, limitations in their fabrication and integration into devices often constrain their practical applications. Moreover, carbon nanomaterials-based electrochemical devices still face problems such as large background currents, poor stability, and slow kinetics. To advance towards a new class of carbon nanostructured electrochemical transducers, we propose the in-situ polymerization and carbonization of furfuryl alcohol (FA) on porous silicon (pSi) to produce a tailored and highly stable transducer. The thin layer of polyfurfuryl alcohol (PFA) that conformally coats the pSi scaffold transforms into nanoporous carbon when subjected to pyrolysis above 600 degrees C. The morphological and chemical properties of PFA-pSi were characterized by scanning electron microscopy, and Raman and X-ray photoelectron spectroscopies. Their stability and electrochemical performance were investigated by cyclic voltammetry and electrochemical impedance spectroscopy in [Fe(CN)6] 3-/4-, [Ru(NH3)6] 2+/3+, and hydroquinone. PFA-pSi showed superior electrochemical performance compared to screen-printed carbon electrodes while also surpassing glassy carbon electrodes in specific aspects. Besides, PFA-pSi has the additional advantage of easy tuning of the electroactive surface area. To prove its potential for biosensing purposes, a DNA sensor based on quantifying the partial pore blockage of the pSi upon target hybridization was built on PFA-pSi. The sensor showed a limit of detection of 1.4 pM, outperforming other sensors based on the same sensing mechanism.
  • Otros:

    Autor según el artículo: Rajendran, AA; Guo, KY; Alvarez-Fernandez, A; Gengenbach, TR; Velasco, MB; Fornerod, MJ; Shafique, K; Füredi, M; Formentín, P; Haji-Hashemi, H; Guldin, S; Voelcker, NH; Cetó, X; Prieto-Simón, B
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Ambily Rajendran, Anandapadmanabhan / Formentín Vallés, Pilar / Haji Hashemi Varnosfaderani, Hedieh / Prieto Simón, Beatriz / Shafique, Kandeel
    Palabras clave: Temperature Porous silicon Polyfurfuryl alcohol Oxygen reduction Label-free Hydrogen-terminated silicon Graphene Glassy-carbon electrodes Electrochemical transducer Electrical-properties Dna sensor Crystalline-structure Chemical-stability Carbon-stabilization Biosensors
    Resumen: Carbon-based nanomaterials are key to developing high-performing electrochemical sensors with improved sensitivity and selectivity. Nonetheless, limitations in their fabrication and integration into devices often constrain their practical applications. Moreover, carbon nanomaterials-based electrochemical devices still face problems such as large background currents, poor stability, and slow kinetics. To advance towards a new class of carbon nanostructured electrochemical transducers, we propose the in-situ polymerization and carbonization of furfuryl alcohol (FA) on porous silicon (pSi) to produce a tailored and highly stable transducer. The thin layer of polyfurfuryl alcohol (PFA) that conformally coats the pSi scaffold transforms into nanoporous carbon when subjected to pyrolysis above 600 degrees C. The morphological and chemical properties of PFA-pSi were characterized by scanning electron microscopy, and Raman and X-ray photoelectron spectroscopies. Their stability and electrochemical performance were investigated by cyclic voltammetry and electrochemical impedance spectroscopy in [Fe(CN)6] 3-/4-, [Ru(NH3)6] 2+/3+, and hydroquinone. PFA-pSi showed superior electrochemical performance compared to screen-printed carbon electrodes while also surpassing glassy carbon electrodes in specific aspects. Besides, PFA-pSi has the additional advantage of easy tuning of the electroactive surface area. To prove its potential for biosensing purposes, a DNA sensor based on quantifying the partial pore blockage of the pSi upon target hybridization was built on PFA-pSi. The sensor showed a limit of detection of 1.4 pM, outperforming other sensors based on the same sensing mechanism.
    Áreas temáticas: Mechanical engineering Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) General materials science
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: kandeel.shafique@urv.cat beatriz.prieto-simon@urv.cat hedieh.hajihashemi@urv.cat kandeel.shafique@urv.cat anandapadmanabhan.ambily@estudiants.urv.cat anandapadmanabhan.ambily@estudiants.urv.cat pilar.formentin@urv.cat pilar.formentin@urv.cat
    Identificador del autor: 0000-0001-8016-1565 0000-0002-1619-6912 0000-0002-1619-6912
    Fecha de alta del registro: 2024-08-03
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S2590049824000018
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Materials Today Advances. 21 100464-
    Referencia de l'ítem segons les normes APA: Rajendran, AA; Guo, KY; Alvarez-Fernandez, A; Gengenbach, TR; Velasco, MB; Fornerod, MJ; Shafique, K; Füredi, M; Formentín, P; Haji-Hashemi, H; Guldin (2024). A new class of porous silicon electrochemical transducers built from pyrolyzed polyfurfuryl alcohol. Materials Today Advances, 21(), 100464-. DOI: 10.1016/j.mtadv.2024.100464
    DOI del artículo: 10.1016/j.mtadv.2024.100464
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2024
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Mechanical Engineering
    Temperature
    Porous silicon
    Polyfurfuryl alcohol
    Oxygen reduction
    Label-free
    Hydrogen-terminated silicon
    Graphene
    Glassy-carbon electrodes
    Electrochemical transducer
    Electrical-properties
    Dna sensor
    Crystalline-structure
    Chemical-stability
    Carbon-stabilization
    Biosensors
    Mechanical engineering
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    General materials science
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