Abstract
In the current study, a new sensor for sensing AAP in pH 3.0 is being developed employing Hydrocerol-A coated green magnetite nanoparticle (HCA-Fe3O4) wrapped MoS2 nanocomposite modified glassy carbon electrode (HCA-Fe3O4/MoS2@GCE). The electrode material was characterized by CV, SEM, EDX, XRD, and EIS. The proposed sensor showed strong electrocatalytic activity and electrooxidation towards 4-aminoantipyrine with higher peak shift compared to the bare electrode. A plausible mechanism has been suggested to account for the participation of protons and electrons in the oxidation reaction of 4-aminoantipyrine. The quantification of the sensor was conducted using SWV studies under optimized conditions. The obtained results demonstrated that the sensor exhibited a low limit of detection of 9.8 nM and a quantification limit of 30 nM. Additionally, the sensor displayed a wide linear dynamic range spanning from 0.08 to 20 μM. The sensor that was developed demonstrated favorable selectivity for the electrochemical detection of AAP, even in the presence of interferants. Moreover, the artificially created sensor was evaluated for its feasibility in contaminated biological and water samples.
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