A nickel foam modified with electrodeposited cobalt and phosphor for amperometric determination of dopamine.
You TaoQuan KongZeming TaoJixiang DuanHongtao GuanGang ChenChengjun DongPublished in: Mikrochimica acta (2019)
Considering the importance of dopamine (DA) detection for neuroscience and disease diagnosis, herein, an electrochemical sensor for dopamine is described. It is based on the use of a Ni-Co-P nanostructure fabricated on nickel foam via electrode position from cobalt chloride and ammonium phosphate for 10 min. Time-dependent experiments show the transformation of Ni-Co-P nanoparticles to spheres. The resulting electrode display excellent electrochemical response to DA. Figures of merit include (a) a working potential of 0.55 V (vs. Ag/AgCl); (b) an electrochemical sensitivity of 5262 μA mM-1 cm-2; (c) a wide linear range (from 0.5 to 2350 μM), and (d) a 1 μM detection limit. The outstanding electrochemical performance is explained by the synergistic effects of large surface area, improved electron transfer, presence of free binders, and the presence of three active components (nickel, cobalt and phosphonium ion). Graphical abstract A Ni-Co-P nanostructure was electrodeposited on nickel foam to obtain an electrochemical sensor for amperometric determination of dopamine with outstanding performance.
Keyphrases
- reduced graphene oxide
- gold nanoparticles
- metal organic framework
- label free
- molecularly imprinted
- ionic liquid
- carbon nanotubes
- electron transfer
- uric acid
- solid phase extraction
- oxide nanoparticles
- real time pcr
- loop mediated isothermal amplification
- quantum dots
- climate change
- transition metal
- tandem mass spectrometry
- neural network