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Molybdenum oxide nanoparticles for the sensitive and selective detection of dopamine

Author:
Fazio, E.  Spadaro, S.  Bonsignore, M.  Lavanya, N.  Sekar, C.  Leonardi, S. G.  Neri, G.  Neri, F.  


Journal:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY


Issue Date:
2018


Abstract(summary):

Molybdenum oxide nanoparticles (MoOx, NPs) were successfully prepared by the pulsed laser ablation technique in water. Picosecond pulses allowed synthesizing chemically and morphologically stable MoOx colloidal nano-particles dispersed in water, which are used to fabricate modified screen printed carbon paste electrode (SPCE). The molybdenum oxide nanoparticles modified electrode (MoOx NPs/SPCE) shows enhanced electro-catalytic behavior for the detection of dopamine in Phosphate Buffered Saline (pH =3D 7) solution. Under the optimal conditions, the peak current of dopamine increased linearly with the concentration in the 0.1-600 mu M range, with a limit of detection (LOD) of 43 nM. The very easy MoOx NPs/SPCE fabrication, its high sensitivity, sub-micromolar detection limits and excellent selectivity towards main interferents, made them as a potential candidate for the detection of dopamine in pharmaceutical and clinical preparations.


Page:
91---96


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