In:
Advances in Natural Sciences: Nanoscience and Nanotechnology, IOP Publishing, Vol. 13, No. 3 ( 2022-09-01), p. 035002-
Abstract:
In this report, cobalt ferrite nanoparticles (CoFe 2 O 4 NPs) synthesised from the co-precipitation method were strongly connected with graphene oxide nanosheets (GO) via ‘bridge molecules’- polyhexamethylene biguanide hydrochloride (PHMB)’. Silver (Ag) NPs were grown on the surface of CoFe 2 O 4 -GO nanocomposites to improve the electrical conductivity and electrocatalytic ability of the proposed functional nanocomposites. Characteristics of the synthesised materials were investigated via x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, cyclic voltammetry (CV), and differential pulse voltammetry (DPV). The obtained results demonstrate that the CoFe 2 O 4 -Ag-GO nanocomposites could significantly improve the adsorption ability and electron transfer between electrode and analytes owing to the synergetic effect of Ag NPs, CoFe 2 O 4 NPs, and GO. The prepared CoFe 2 O 4 -Ag-GO nanocomposites showed the highest electrochemical response for chloramphenicol antibiotic detection, with current intensity response (∼24.4 μ A) being 3.25 and 2.57 times higher than that of CoFe 2 O 4 NPs (7.5 μ A) and CoFe 2 O 4 -GO (9.5 μ A), respectively. The calibration plot is linear in the 1–50 μ M CAP concentration range, with a detection limit of 0.1 μ M. With excellent electrochemical properties, the CoFe 2 O 4 -Ag-GO nanocomposites are expected to be a potential candidate for advanced electrochemical sensing applications.
Type of Medium:
Online Resource
ISSN:
2043-6262
DOI:
10.1088/2043-6262/13/3/035002
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2022
detail.hit.zdb_id:
2563789-7
Permalink