Fabrication of PAMP/Au and GO/PAMP/Au nanosensors for electrochemical detection of paracetamol in pharmaceutical preparations
Monatshefte für Chemie - Chemical Monthly(2021)
摘要
This paper reports on the modification of Pencil Graphite Electrode (PGE) surface with the poly(2-amino-4-methylphenol)/gold (PAMP/Au) and graphene oxide/poly(2-amino-4-methylphenol)/gold (GO/PAMP/Au) nanocomposites, in two steps. The first step is based on the one-pot preparation of composites by template-free chemical oxidation process. In the second step, composites are deposited at PGE surface by electro-oxidation process. Both nanocomposites and modified PGE surfaces are characterized by X-Ray Diffraction method (XRD), Scanning Electron Microscopy (SEM), EDAX, and CV analyses. The electrochemical performances of modified electrodes (abbreviated as PAMP/Au-PGE and GO/PAMP/Au-PGE) were investigated. The limit of detection values for PGE, PAMP/Au-PGE, and GO/PAMP/Au-PGE were found to be 2.74 × 10 –6 , 5.29 × 10 –7 , and 2.91 × 10 –8 mol/dm 3 , respectively. The limit of quantification values were determined as 9.14 × 10 –6 , 1.76 × 10 –6 , and 9.69 × 10 –8 mol/dm 3 for PGE, PAMP/Au-PGE, and GO/PAMP/Au-PGE, respectively. Graphical Abstract
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关键词
Polymerization, Pencil graphite electrode, Graphene oxide, Poly(2-hydroxy-5-methylaniline), Electrochemistry, Sensors
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