Author(s):
1. Muqadisa Shanawar Rafique:
Department of Chemistry, Rawalpindi Women University,Rawalpindi,Pakistan
2. Hina Naeem:
Department of Chemistry, Rawalpindi Women University,Rawalpindi,Pakistan
Abstract:
Monitoring human health is of major clinical importance for early healthdisorders detection. Creating a flexible microelectrode that is graphene basedhaving medical importance for biomolecules detection is better in fabricatingelectrochemical sensors for selective detection of dopamine, a crucialneurotransmitter. Dopamine sensors that are based upon noble metalnanoparticles and carbon based materials have been reviewed. Short reactiontimes as well as extremely sensitive, responsive, stable, and selective sensorshave been in great demand so in the modern times composites based ongraphene with metal based nanoparticles promotes these hybrid composites inlarge range biomedical applicability. Moreover, doping graphene derivativeshaving heteroatoms (Fe and Ni) can changes their properties which areconsidered better in fabricating cost-effective sensors for practical utility. Facilepreparation of Graphene oxide-Iron/Nickel oxide (GO- Fe/NiO) hybridcomposite has been reported as it focuses on Fe doped NiO graphene oxidesynthesis utilizing the co-precipitation method. Different properties of thecomposites were investigated by techniques such as X-ray Powder Diffraction(XRD), Scanning Electron Microscopy (SEM), Fourier Transform InfraredSpectroscopy (FTIR) along with Energy Dispersive X-ray Spectroscopy (EDX).Techniques such as cyclic voltammetry (CV) and chronoamperometry (CA) areutilized in this studies for sensing dopamine. Fe-NiO/GO based flexible electrodesas sensors showed a linear dynamic range like 1.9 mM, sensitivity of 510 µA mM-1cm-2 and a low limit of detection till 0.048 µM having a quick time of responsethat is 2s on lab scale testing. Such type of results supported that themicrostructure sensors are cost effective, efficient and easily disposableelectrodes that can be used for wearable sensing applications in future.
Page(s):
82-82
DOI:
DOI not available
Published:
Journal: 4th International Conference of Sciences “Revamped Scientific Outlook of 21st Century, 2025” , November 12,2025, Volume: 1, Issue: 1, Year: 2025
Keywords:
Graphene oxide
,
Doping
,
electrochemical sensors
,
Nanohybrid
,
Graphene nanocomposites
,
Electrochemical sensing
,
Dopamine Sensing
,
Flexible devices
References:
References are not available for this document.
Citations
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