RT journal article
T1 Incorporation of carbon black into a sonogel matrix: improving antifouling properties of a conducting polymer ceramic nanocomposite
A1 Sierra Padilla, Alfonso
A1 López-Iglesias, David
A1 Calatayud‑Macías, Paloma
A1 García Guzmán, Juan José
A1 Palacios Santander, José María
A1 Cubillana Aguilera, Laura
A2 Química Analítica
K1 Conducting polymers
K1 Nanomaterials
K1 Sonogel-Carbon electrochemical sensors
K1 Differential pulse voltammetry
K1 Chlorophenols
K1 Antifouling properties
K1 High-energy ultrasound
AB A new electrochemical sensor device has been developed through the modification of a polyaniline-silicon oxide network with carbon black (CB). Enhanced electrical conductivity and antifouling properties have been achieved due to the integra- tion of this cheap nanomaterial into the bulk of the sensor. The structure of the developed material was characterized using Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and scanning electron microscopy tech- niques. Cyclic voltammetry was used to characterize electrochemically the Sonogel-Carbon/Carbon Black-PANI (SNG-C/ CB-PANI) sensor device. In addition, differential pulse voltammetry was employed to evaluate the analytical response of the sensor towards sundry chlorophenols, common environmental hazards in aqueous ecosystems. The modified sensor material showed excellent antifouling properties, which led to a better electroanalytical performance than the one displayed with the bare sensor. Notably, a sensitivity of 5.48 × 103 μA mM−1 cm−2 and a limit of detection of 0.83 μM were obtained in the determination of 4-chloro-3-methylphenol (PCMC) at a working potential of 0.78 V (vs. 3 M Ag/AgCl/KCl), along with proficient values of reproducibility and repeatability (relative standard deviation < 3%). Finally, the analysis of PCMC was carried out in multiple validated water samples using the synthesized SNG-C/CB-PANI sensor device, obtaining excellent results of recovery values (97–104%). The synergetic effect of polyaniline and carbon black leads to novel antifouling and electrocatalytic effects that improve the applicability of this sensor in sample analysis versus complex conventional devices.
PB Springer
SN 1436-5073
YR 2023
FD 2023-04-04
LK http://hdl.handle.net/10498/28549
UL http://hdl.handle.net/10498/28549
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026