Electrodeposition synthesis of a NiO/CNT/PEDOT composite for simultaneous detection of dopamine, serotonin, and tryptophan

Green sonochemical synthesis and fabrication of cubic MnFe2O4 electrocatalyst decorated carbon nitride nanohybrid for neurotransmitter detection in serum samples

“…The STN electrochemical behavior has been proposed to occur via the electrochemical electron transfer mechanism as shown in Scheme 3 . The first step involves STN oxidation to STN-quinone, which reacts chemically generating quinone compound [23] , [37] . It is a two electron transfer reaction peaks should be observed at pH = 7.0.…”

Progress in the Development of Intrinsically Conducting Polymer Composites as Biosensors

“…Thus chemically modified GR such as graphene oxide (GO) and reduced graphene oxide (rGO) have been developed for multi‐functionalization. For instance, covalent immobilization of the biomolecule, defective plane, and rich edge reaction sites contribute to the recognition of target analyte . Various composites of GR and chemically modified GR and their applications in various biosensors are shown in Figure .…”

“…The as‐synthesized dispersion of PEDOT:PSS‐AuNP‐graphene was used for the fabrication of biosensor on the electrode surface by drop casting and the resulting biosensor unveiled linear response of (1 n m –300 m m ) and (10–1 m m ) with low limit of detection 100 p m and 10 m m of dopamine and uric acid, respectively and was tested in real pharmaceutical and human serum samples. Baohe et al determined simultaneous detection of dopamine, serotonin, and tryptophan by electrodeposition synthesis of novel PEDOT/CNT/nickel oxide composite . The composite was found to be 1D co‐axial structured nanotube of CNT and nickel oxide/PEDOT composite that exhibited high electrocatalytic activity and a linear response was obtained with low detection limit of 0.026, 0.063, and 0.210 µ m for dopamine, serotonin, and tryptophan, respectively, which was then utilized for simultaneous detection in serum samples.…”

Carbon‐Nanotube‐Based Materials for Electrochemical Sensing of the Neurotransmitter Dopamine

“…Electrochemical response of NiO/CNT/PEDOT/GCE sensor for the concurrent determination of DA, serotonin (5‐HT) and Trp were investigated by CV, DPV and electrochemical impedance spectroscopy. The corresponding linear response and LOD for DA, 5‐HT and Trp are 0.03–20 μM, 0.3–35 μM and 1–41 μM; 0.026 μM, 0.063 μM and 0.210 μM respectively . Electrochemical behavior of DA at a RuO 2 ‐modified vertically aligned CNT electrode was investigated by chronoamperometry, CV and DPV.…”

“…The corresponding linear response and LOD for DA, 5-HT and Trp are 0.03-20 μM, 0.3-35 μM and 1-41 μM; 0.026 μM, 0.063 μM and 0.210 μM respectively. [44] Electrochemical behavior of DA at a RuO 2 -modified vertically aligned CNT electrode was investigated by chronoamperometry, CV and DPV. At a potential of + 0.4 V, the optimized RuO 2 /MWCNT electrode exhibited a wide range from 6.0 × 10 À 7 -3.6 × 10 À 3 M with detection limit 0.06 μM and sensitivity of 83.8 mA Mm À 1 .…”