Glassy carbon electrode modified with poly(taurine)/TiO2-graphene composite film for determination of acetaminophen and caffeine

Abstract

A novel electrochemical sensor poly(taurine)/TiO2-graphene nanocomposite modified glassy carbon electrode (PT/TiO2-Gr/GCE) was fabricated. This sensor was based on an electrochemically polymerized taurine layer on a TiO2-graphene modified glassy carbon electrode. The electrochemical behaviors of acetaminophen and caffeine at the modified electrode were studied by cyclic voltammetry and differential pulse voltammetry. The results showed that the oxidation peak currents of acetaminophen and caffeine were linear with their concentrations in the range of 1×10-7-9×10-5 M and 2.5×10-5-2×10-4 M, respectively. The detection limits of acetaminophen and caffeine were 3.4×10-8 M and 5.0×10-7 M, respectively (S/N=3). This modified electrode showed good sensitivity and stability, which had promising potential applications in electrochemical sensors and biosensors design

Helium-assisted, solvent-free electro-activation of 3D printed conductive carbon-polylactide electrodes by pulsed laser ablation

“…Icaffeine (μA) = 0.0636 [Ccaffeine (M)] + 2.288 (2) and with correlation coefficient (R 2 = 0.997). The LOD was calculated to be 0.40 μM (S/N = 3), which is very good compared to other studies using DPV [33,73,74]. The obtained CV and DPV results allow us to confirm high efficiency and good reproducibility of quantitative evaluation of the caffeine presence with the use of C-PLA electrodes after surface activation by laser ablation in He atmosphere.…”

Electrochemical and piezoelectric monitoring of taurine via electropolymerized molecularly imprinted films

“…The potential window chosen for polymerization of l ‐methionine was −0.30 to 1.5 V intentionally to avoid polymerization of taurine present in the prepolymerization mixture. Taurine is reported to polymerize in the potential window −1.5 to 2.0 V only; hence, polymerization of taurine could not be carried out below the positive potential of +1.6 V and above negative potential of −0.8V . Thus, in the potential window chosen here, only l ‐methionine would polymerize.…”

Enhanced Electrochemical Determination of Catechol and Hydroquinone Based on Pd Nanoparticles/Poly(Taurine) Modified Glassy Carbon Electrode

“…It can be easily electro polymerized on the electrode surface with the help of aminic and À SO 3 À group in its structure [15,16]. Some studies have focused on the use of polymerized TAU as an electrode material including the determination of arsenic [17], malondialdehyde [18], glucose [19], hydrazine [20], levofloxacin [21], acetaminophen and caffeine [22], epinephrine and dopamine [23].…”