RT Journal Article
T1 Novel electrosynthesis of CdS/FeS nanocomposite-modified poly(o-phenylenediamine) with views to their use as a biosensor for Escherichia coli.
A1 Hernández, Loreto
A1 Martín-Jiménez, Francisco de Paula
A1 Berrios, Eduardo
A1 Riveros, Gonzalo
A1 González, Darío M
A1 González, Ernesto
A1 Lizama, Susy
A1 Hernández, Franco
K1 Enfermedades de origen alimentario
K1 Sensores electroquímicos
AB This article proposes a new electrochemical sensor for Escherichia coli (E. Coli) com- posed of poly(o-phenylenediamine) (PoPD) and CdS/FeS nanocomposites (PoPD|CdS/FeS). The preparation of the modified electrodes used for this purpose and their subsequent use as a sensor comprise a simple, fast and reproducible technique. The characterization of the CdS/FeS nanocomposites and their subsequent inclusion on PoPD was performed by X-ray diffraction (XRD), Raman, field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HR-TEM) and computational methods; For the nanocomposites an average size of 100 nm was obtained after applying a reduction potential for 5 s over the polymeric matrix. The electrochemical characterizations confirmed that the inclusion of the nanocomposites improved the amperometric response, allowing the developed material to be used as an electrochemical sensor for E. Coli. The figures obtained gave the linear equation j = -6.89 x 10-14  x CFU + 5.64 x 10-5, with an R2 of 0.995, for 10 replicates. Furthermore, the limit of detection (LOD) was 6.1 x 105 CFU/mL, and the limit of quantification (LOQ) was 6.1 x 106 L.
PB Elsevier
YR 2020
FD 2020
LK https://hdl.handle.net/10630/35549
UL https://hdl.handle.net/10630/35549
LA eng
NO Arabian Journal of Chemistry, 13  (2020)  8758 -8767
NO FONDECYT 11180600, PAI 79170110 and FONDECYT 11171043
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 24 ene 2026