4-Aminobenzoic acid covalently modified glassy carbon electrode for sensing paracetamol at different temperatures

Abstract

4-Aminobenzoic acid (4-ABA) was covalently grafted on a glassy carbon electrode (GCE) during an electrochemical oxidation process in 0.1 M KCl aqueous solution. The modified electrode was applied to sense paracetamol (PCT) at serials of simulated physiologic conditions, compared to the bare electrode. The results showed that the modified electrode possessed better stability, reusability, and longevity than the bare GCE at room to physiologic temperatures. This indicated that 4-ABA/GCE can be used as the electrochemical sensing platform of PCT at the physiologic condition.

Visible Light Photoelectrochemical Sensor for Acetaminophen Determination using a Glassy Carbon Electrode Modified with BiVO4 Nanoparticles

“…On the other hand, were observed an oxidation peak around 0.4 V and a reduction peak in 0.0 V in the presence of 1.0 mmol L −1 of AC. In accordance with literature, the electrochemical mechanism of AC involves two protons and two electrons in a reversible or quasi‐reversible process depending on the working electrode [43, 47, 48]. In this case, the electrochemical redox mechanism of AC was quasi‐reversible due to the slow kinetics of the reaction at GCE and BiVO 4 ‐DHP/GCE, with ΔE p of 470 and 510 mV, respectively.…”

“…In the literature, there are reports various methods AC determination using different analytical techniques such as spectrophotometry [36][37][38] and chromatography [39,40]. Electroanalytical methods are also reported utilizing different unmodified and modified carbon electrodes [28,30,[41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. Additionally, two works has been published in the literature involving the use of PEC sensors for AC determination.…”

In situ Electrochemical Synthesis of a Composite Film Containing Nickel Hexacyanoferrate and Bentonite Clay for the Sensitive Determination of Acetaminophen and Dopamine

“…These results clearly indicate the electrocatalytic oxidation of AC by GCE/NiHCF−Bt. Generally, oxidation of AC leads to the removal of two electrons and favors the formation of N‐acetyl‐p‐benzoquinone‐imine as shown in Eq. 3.…”

In-situ Thermoelectrochemistry

“…From [144], with permission interest for practical application of SAMs. Analytical applications often play a role in electrochemical experiments with temperature variation [161][162][163][164][165][166][167][168]. Thermoelectrochemistry is useful for determining SAM parameters.…”

“…Protein membranes and immobilised enzyme layers have been studied [158,159]. sulphide determination at preoxidised nickel electrodes [167] or the sensitivity of modified electrodes [168]. Analytical applications often play a role in electrochemical experiments with temperature variation [161][162][163][164][165][166][167][168].…”