Electrochemical sensors based on platinum electrodes modified with hybrid inorganic–organic coatings for determination of 4-nitrophenol and dopamine

Morphological characterization and analytical application of poly(3,4-ethylenedioxythiophene)–Prussian blue composite films electrodeposited in situ on platinum electrode chips

“…The PEDOT-PB composite inorganic-organic coatings were prepared by a two-step method, previously used for modification of conventional-size Pt electrodes and Au disk microelectrode arrays [34,41,42]. In this work, the concentration of Fe 3+ ions and the number of deposition potential scans were changed.…”

“…0. 2 (2) Composite materials based on transition metal hexacyanoferrates and conducting polymers have been recently prepared in various configurations on electrode surfaces [22][23][24][25][26][27][28][29][30][31][32][33][34]. The inorganic redox mediator maintained its electrocatalytic activity upon immobilization, and the organic component increased the stability of the coating in both organic media and aqueous solutions.…”

Amperometric magnetobiosensors using poly(dopamine)-modified Fe3O4 magnetic nanoparticles for the detection of phenolic compounds

“…Although, standard methods are adequate for quantitative phenolic determination 30,[32][33][34][35] , generally they require pretreatment processes and high-qualified personnel. In addition, traditional electrochemical sensors are very poor and the electrode surface may be fouled by insulating polymer films or by-products generated during phenolic detection 36,37 . Owing to those disadvantages, researchers have focused on the use on nanostructured and catalytic materials 31,38,39 or in enzyme based amperometric biosensors [40][41][42][43][44][45][46][47] .…”

Enhanced Electrochemiluminescence Employed for the Selective Detection of Methyl Parathion Based on a Zirconia Nanoparticle Film Modified Electrode

“…To study the stability of ECL sensors, the modified electrode was immersed in 3.8 × 10 -9 mol L -1 MP containing a 0.1 M KCl solution for 240 s. The ECL emission generated in the 1.0 × 10 -5 M luminol containing 0.1 M KCl with the instrument condition was as follows: scan rate, 100 mV/s; scan range, performed from -0.8 to +0.6 V; PMT potential, 650 V. Due to its anti-fouling capability, the modified electrode often avoids these drawbacks, which suffer from interferences or surface fouling by products arising from follow-up reactions. 48 Figure 7 shows the modified electrode continuous potential when scanning for 11 cycles.…”