A comparative study of different electrodeposited NiCo₂O₄ microspheres anchored on a reduced graphene oxide platform: electrochemical sensor for anti-depressant drug venlafaxine

Abstract

Different electrodeposited NiCo2O4 microspheres supported on a reduced graphene oxide platform for electrochemical sensing of venlafaxine.

Advances in the Analysis of Pharmaceuticals by Using Graphene‐Based Sensors

“…This is demonstrated by Ali and El‐Zahry, [119] who have first prepared nickel‐cobalt oxide microspheres using the wet chemistry and in situ electrical deposition, followed by the anchorage of the microspheres on a rGO‐modified graphite electrode. It has been demonstrated that the deposition methods of the microspheres significantly affect the electrochemical behaviour of the generated electrode towards the oxidation of venlafaxine [119] . In addition, the one containing the microspheres generated by using wet chemistry has been found to detect venlafaxine in pharmaceutical formulations and in human plasma, with the detection efficiency not being affected by any co‐existing components [119] .…”

Simultaneous Electrodeposition of Reduced Graphene Quantum Dots/Copper Oxide Nanocomposite on the Surface of Carbon Ceramic Electrode for the Electroanalysis of Adenine and Guanine

“…Linearity of peak currents vs. root of scan rate in the range of 10-300 mV s À 1 (B) representing diffusion-controlled mechanism of the process. According to Randles-Sevic equation [32], surface area of the electrodes could be calculated by following equation:…”

Recent Advances in the Electrochemical Sensing of Venlafaxine: An Antidepressant Drug and Environmental Contaminant

“…Ali et al comparatively dealt with the utilization of two distinctive deposition methodologies to synthesize NiCo 2 O 4 @rGO-modified graphite electrode [ 39 ]. They used diverse procedures such as EIS, CV, Raman spectroscopy, and SEM to characterize differences between two in situ modified electrodes NiCo 2 -O 4 @rGO-modified electrodes and wet-NiCo 2 O 4 @rGO.…”

“…Their technique showed a successful application for determining the VEN in pharmaceutical formulations and human plasma. Ali et al did not observe any interferences from the real sample matrix [ 39 ]. Their new electrode exhibited very good reproducibility and excellent stability.…”

“…Their new electrode exhibited very good reproducibility and excellent stability. Finally, they combined the bi-metallic micro-spheres hybrid and the strongly conductive reduced graphene oxide (wet-NiCo 2 O 4 @-rGO) probe as one of the sensitive and selective tools for VEN trace analysis in various matrices [ 39 ]. A number of characteristics of the various electrodes in VEN electrochemical detection are summarized in Table 5 .…”