biostudies-literatureShen LNatural Science Foundation of Shanxi Province707https://www.ebi.ac.uk/biostudies/studies/S-EPMC9964092biostudies-literatureUnknown13(4)Acetaminophen (AC) is one of the most popular pharmacologically active substances used as an analgesic and antipyretic drug. Herein, a new type of hollow Fe₃O₄-rGO/GCE electrode was prepared for electrochemical detection of AC through a three-step approach involving a solvothermal method for the synthesis of hollow Fe₃O₄ and the chemical reduction of graphene oxide (GO) for reduced graphene oxide (rGO) and Fe₃O₄-rGO nanocomposites modified on the glassy carbon electrode (GCE) surface. The as-prepared Fe₃O₄-rGO nanocomposites were characterized using a transmission electron microscope (TEM), X-ray diffraction (XRD), and a magnetic measurement system (SQUID-VSM). The magnetic Fe₃O₄-rGO/GCE electrodes were employed for the electrochemical detection of AC using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and square wave voltammetry (SWV) and exhibited an ultra-high selectivity and accuracy, a low detection limit of 0.11 µmol/L with a wider linear range from 5 × 10^-7 to 10^-4 mol/L, and high recovery between 100.52% and 101.43%. The obtained Fe₃O₄-rGO-modified GCE displays great practical significance for the detection of AC in drug analysis.Nanomaterials (Basel, Switzerland)Facile Synthesis of Hollow Fe₃O₄-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen.PMC99640922021030212233262021030212233242021030212308920210302123089, 202103021223324 and 202103021223326Shen LWen XLi JDong JWen BfalseFacile Synthesis of Hollow Fe₃O₄-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen.Acetaminophen (AC) is one of the most popular pharmacologically active substances used as an analgesic and antipyretic drug. Herein, a new type of hollow Fe₃O₄-rGO/GCE electrode was prepared for electrochemical detection of AC through a three-step approach involving a solvothermal method for the synthesis of hollow Fe₃O₄ and the chemical reduction of graphene oxide (GO) for reduced graphene oxide (rGO) and Fe₃O₄-rGO nanocomposites modified on the glassy carbon electrode (GCE) surface. The as-prepared Fe₃O₄-rGO nanocomposites were characterized using a transmission electron microscope (TEM), X-ray diffraction (XRD), and a magnetic measurement system (SQUID-VSM). The magnetic Fe₃O₄-rGO/GCE electrodes were employed for the electrochemical detection of AC using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and square wave voltammetry (SWV) and exhibited an ultra-high selectivity and accuracy, a low detection limit of 0.11 µmol/L with a wider linear range from 5 × 10^-7 to 10^-4 mol/L, and high recovery between 100.52% and 101.43%. The obtained Fe₃O₄-rGO-modified GCE displays great practical significance for the detection of AC in drug analysis.2023-01-01T00:00:00Z2023 Feb2025-05-18T12:54:40.985Z2025-05-18T12:54:40.985ZS-EPMC99640923683907510.3390/nano13040707