Determination of ascorbic acid, dopamine, and uric acid by a novel electrochemical sensor based on pristine graphene

In this article, a novel electrochemical sensor based on pristine graphene (PG) is successfully constructed to detect ascorbic acid (AA), dopamine (DA), and uric acid (UA). The PG is obtained by liquid-phase exfoliation of graphite and characterized by transmission electron microscopy and X-ray phot...

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Bibliographic Details
Published inElectrochimica acta Vol. 161; pp. 395 - 402
Main Authors Qi, Shaopeng, Zhao, Bo, Tang, Heqing, Jiang, Xiaoqing
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 10.04.2015
Subjects
ascorbic acid
dopamine
electrochemical sensor
pristine graphene
uric acid
pristine graphene
ascorbic acid
electrochemical sensor
dopamine
uric acid
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Summary:In this article, a novel electrochemical sensor based on pristine graphene (PG) is successfully constructed to detect ascorbic acid (AA), dopamine (DA), and uric acid (UA). The PG is obtained by liquid-phase exfoliation of graphite and characterized by transmission electron microscopy and X-ray photoelectron spectroscopy. The sensor based on PG prepared by this method to realize simultaneous determination of AA, DA, and UA is firstly reported. The linear detection ranges for AA, DA, and UA are 9.00–2314μM, 5.00–710μM, and 6.00–1330μM, respectively, with detection limits of 6.45, 2.00, and 4.82μM. This PG based sensor exhibits excellent performance for detection of AA, DA, and UA, which is much better than those electrochemical sensors based on chemical converted graphene.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2015.02.116