Determination of ascorbic acid, dopamine, and uric acid by a novel electrochemical sensor based on pristine graphene. (10th April 2015)

• Record Type: Journal Article
• Authors: Qi, Shaopeng; Zhao, Bo; Tang, Heqing; Jiang, Xiaoqing
• Is Part Of: Electrochimica acta. Volume 161(2015)
• Page Start: 395
• Page End: 402
• Publication Date: 2015-04-10
• Subjects: pristine graphene -- electrochemical sensor -- ascorbic acid -- dopamine -- uric acid; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.02.116
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: 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 9.00–2314 μM, 5.00–710 μM, and 6.00–1330 μM, respectively, with detection limits of 6.45, 2.00, and 4.82 μM. 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.