Electrocatalytic response of the modified ZnO-G electrodes towards the oxidation of serotonin with multi metallic corrosion protection

Serotonin receptors, also known as 5-hydroxytryptamine (5-HT), play a significant part in neurotransmission and regulate various neurological activities. Researchers are working on finding the appropriate material for sensing 5-HT. Herein, we developed a dual role ZnO-G nanocomposites with electrocatalytic sensing and anticorrosive behavior against Mg, Al, and Cu alloy. ZnO has an oxidative response of 4.55 μA at 0.378 V, and So-Zn-G electrode has reduced overpotential and enhanced current response. The electroactive surface area was found to be ∼596 cm2/g. The calculated limit of detection (LOD) was 6.48 μM and linear range of 20–100 μM. Positive corrosion protection activity of ZnO-G was noted for all three alloys, opening opportunities for its integrated effects (anticorrosive and serotonin sensing) in electronic devices. Electrocatalytic response of the modified ZnO-G nanoarchitectonic electrodes towards the oxidation of serotonin with multi metallic corrosion protection [Display omitted] •ZnO-G nanocomposites exhibits anticorrosive action towards Mg, Al, and Cu alloys.•At 0.378 V, ZnO has an oxidative response of 4.55 A, and the So-Zn-G electrode exhibits a improved current responsiveness.•The limit of detection (LOD) was determined to be 6.48 μM with a linear range of 20-100 μM.