화학공학소재연구정보센터
Journal of Applied Electrochemistry, Vol.49, No.3, 291-304, 2019
A new porous copolymer electrocatalyst: the optimal synthesis, characterization, and application for the measurement of amoxicillin
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 H2SO4 solution (without organic additives) at 20 mV s(-1) scan rate, resulting in quasi-reversible electrochemisorption of 3D copolymer clusters (85.50-96.27 nm) on the surface of a handmade inexpensive electrode prepared under the E(CCE)(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 x 10(-6) M and recovery of 99.99% +/- 0.04% in the linear range of 2 x 10(-5)-4 x 10(-4) M. [GRAPHICS] .