RT journal article
T1 Polyaniline Nanofibers-Embedded Gold Nanoparticles Obtained by Template-Free Procedure with Immobilization Prospects
A1 Crespo-Rosa, Joaquín Rafael
A1 Sierra Padilla, Alfonso
A1 García Guzmán, Juan José
A1 López-Iglesias, David
A1 Bellido Milla, Dolores
A1 Palacios Santander, José María
A1 Cubillana Aguilera, Laura
A2 Química Analítica
K1 conducting polymers
K1 electrochemical biosensors
K1 Sonogel-Carbon
K1 conducting polymers-gold nanoparticles nanocomposite
K1 high-energy ultrasound
K1 polyaniline nanofibers
AB In this work, template-free nanostructured conducting polymers (nCPs)-embedded gold nanoparticles (AuNPs) from aniline, thiophene and 3,4-ethylenedioxythiophene have been prepared via a one-pot sonochemical method. The synthesis of the nanocomposite (nCPs-AuNPs) was achieved in a short period of time (5–10 min), by applying high-energy ultrasound to an aqueous mixture of a CP precursor monomer and KAuCl4, in the presence of LiClO4 as dopant. The synthesis process is simpler, greener and faster in comparison to other procedures reported in the literature. Remarkably, bulk quantities of doped polyaniline PANI-AuNPs nanofibers were obtained. Subsequently, they were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR), as well as by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). PANI-AuNPs nanofibers were also employed as immobilization matrix for a benchmark enzyme, glucose oxidase (GOX). Finally, glucose was determined in real samples of white and red wines by using the so-obtained GOX-PANI-AuNPs/Sonogel-Carbon biosensor, providing outstanding recoveries (99.54%). This work may offer important insights into the synthesis of nanostructured conducting polymers and also stimulates the exploration of the applications of these nanocomposites, especially in research fields such as (bio)sensors, catalysis and composite materials.
PB MDPI
YR 2021
FD 2021-12-18
LK http://hdl.handle.net/10498/25877
UL http://hdl.handle.net/10498/25877
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026