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Electrochemical Determination of Dopamine Using a Glassy Carbon Electrode Modified With a Nanocomposite Consisting of Nanoporous Platinum-Yttrium and Graphene

Electrochemical Determination of Dopamine Using a Glassy Carbon Electrode Modified With a Nanocomposite Consisting of Nanoporous Platinum-Yttrium and Graphene

Dandan Chen, Chunhuan Tian, Xiangyi Li, Zihan Li, Zhida Han, Chun Zhai, Ying Quan, Rongjing Cui, Genhua Zhang

Mikrochim Acta. 2018 Jan 10;185(2):98.

PMID: 29594422

Abstract:

A nanoporous platinum-yttrium alloy (NP-PtY) was fabricated by dealloying ribbons of a PtYAl alloy. Owing to the high porosity and the synergistic effect of Y in the Pt backbone, the NP-PtY exhibits superior structural stability, reproducibility and electrocatalytic activity. An electrochemical sensor was developed for the highly sensitive and selective detection of dopamine (DA) based on the use of a glassy carbon electrode modified with NP-PtY alloy and graphene. The sensor, best operated at 0.16 V vs. SCE, has a linear range covering the 0.9 to 82 μM concentration range, a 0.36 μM detection limit (at S/N = 3), and good selectivity over tyramine, tryptamine, phenethylamine, uric acid, and ascorbic acid. It gave satisfactory results in the determination of DA in spiked samples of urine. Graphical abstract Nanoporous platinum-yttrium alloy (NP-PtY) was fabricated by means of a one-step dealloying process. A glassy carbon electrode modified with the NP-PtY and graphene nanocomposite exhibits a wide linear range and a low detection limit towards dopamine. The sensor has remarkable reproducibility, stability and selectivity.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS71748	Pt/graphene nanocomposite			Price

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