Journal of Applied Electrochemistry

, Volume 49, Issue 3, pp 291–304 | Cite as

A new porous copolymer electrocatalyst: the optimal synthesis, characterization, and application for the measurement of amoxicillin

  • Azam Farshadinia
  • Majid KolahdoozanEmail author
Research Article
Part of the following topical collections:
  1. Sensors
  2. Sensors


The poly(diphenylamine) and poly(4,4′-diaminodiphenyl ether) represent poor current signals and activity. This paper has aimed to synthesize the poly(diphenylamine-co-4,4′-diaminodiphenyl ether) for the first time to overcome these deficiencies. Regarding the reaction circumstances, the potential range of 0–1000 mV was applied to the 1:1 mixture of 0.02 M monomers and 4 M \(~{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) solution (without organic additives) at 20 mV \({{\text{s}}^{ - 1}}\) scan rate, resulting in quasi-reversible electro-chemisorption of 3D copolymer clusters (85.50–96.27 nm) on the surface of a handmade inexpensive electrode prepared under the \({\text{E}}{({\text{CCE}})_{\text{n}}}\) mechanism. This copolymer electrode was characterized and optimized with cyclic voltammetry (CV), FTIR, and FESEM-EDS techniques. The electrode has shown high electrochemical stability, high electroactivity, as well as thin-film behavior. Therefore, it was used as a new catalytic electrode for non-enzymatic amoxicillin sensing through CV and differential pulse voltammetry (DPV) with a detection limit of 1 × \({10^{ - 6}}\) M and recovery of 99.99% ± 0.04% in the linear range of 2 × \({10^{ - 5}}\)–4 × \({10^{ - 4}}\) M.

Graphical Abstract


Modified catalytic electrodes Thin-film electrodes Cyclic voltammetry Differential pulse voltammetry Electrochemical synthesis Electro-sensor 



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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Chemistry, Shahreza BranchIslamic Azad UniversityShahrezaIran
  2. 2.Razi Chemistry Research Center (RCRC), Shahreza BranchIslamic Azad UniversityShahrezaIran

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