Electrochemical and Electroconductive Behavior of Silk Fibroin Electrospun Membrane Coated with Gold or Silver Nanoparticles

Wilson Agudelo, Yuliet Montoya Osorio, Alejandra Garcia-Garcia, Adriana Restrepo-Osorio, John Jairo Bustamante Osorno

Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

3 Scopus citations

Abstract

The surface modification of materials obtained from natural polymers, such as silk fibroin with metal nanoparticles that exhibit intrinsic electrical characteristics, allows the obtaining of biocomposite materials capable of favoring the propagation and conduction of electrical impulses, acting as communicating structures in electrically isolated areas. On that basis, this investigation determined the electrochemical and electroconductive behavior through electrochemical impedance spectroscopy of a silk fibroin electrospun membrane from silk fibrous waste functionalized with gold or silver nanoparticles synthetized by green chemical reduction methodologies. Based on the results obtained, we found that silk fibroin from silk fibrous waste (SFw) favored the formation of gold (AuNPs-SFw) and silver (AgNPs-SFw) nanoparticles, acting as a reducing agent and surfactant, forming a micellar structure around the individual nanoparticle. Moreover, different electrospinning conditions influenced the morphological properties of the fibers, in the presence or absence of beads and the amount of sample collected. Furthermore, treated SFw electrospun membranes, functionalized with AuNPs-SFw or AgNPS-SFw, allowed the conduction of electrical stimuli, acting as stimulators and modulators of electric current.

Original languageEnglish
Article number1154
JournalMembranes
Volume12
Issue number11
DOIs
StatePublished - Nov 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors.

Keywords

  • electrochemical impedance spectroscopy
  • electrospun membranes
  • impregnation coatings
  • metal nanoparticles
  • silk fibroin

Types Minciencias

  • Artículos de investigación con calidad A2 / Q2

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