The Fe3O4 nanoparticles coated with silica nanoparticles were prepared, the obtained Fe3O4@SiO2 have uniform
spherical morphology with a mean diameter of about 30 nm. Then an electrochemical sensor based on with
Fe3O4@SiO2 nanoparticles –coated poly (diallyldimethylammonium chloride) (PDDA)- carbon nanotube
(Fe3O4@SiO2 -PDDA-CNT) nanocomposite was fabricated for sensitive detection of acetaminophen. The
samples were characterized by means of transmission electron microscopy (TEM) and Fourier transform
infrared spectroscopy (FT-IR), Cyclic voltammetry (CV) was used to investigate the electrocatalytic ability of
acetaminophen on the Fe3O4@SiO2- PDDA-CNT/ GCE, and differential pulse voltammetry (DPV) was used for
the quantification of acetaminophen.
