An amperometric glucose biosensor based on a MnO2/graphene composite modified electrode

Article

Liu, Yuge, Zhang, Xiumei, He, Dongning, Ma, Feiyue, Fu, Qiong and Hu, Yun. 2016. "An amperometric glucose biosensor based on a MnO2/graphene composite modified electrode." RSC Advances: an international journal to further the chemical sciences. 6 (22), pp. 18654-18661 . https://doi.org/10.1039/c6ra02680j
Article Title

An amperometric glucose biosensor based on a MnO2/graphene composite modified electrode

ERA Journal ID201472
Article CategoryArticle
AuthorsLiu, Yuge (Author), Zhang, Xiumei (Author), He, Dongning (Author), Ma, Feiyue (Author), Fu, Qiong (Author) and Hu, Yun (Author)
Journal TitleRSC Advances: an international journal to further the chemical sciences
Journal Citation6 (22), pp. 18654-18661
Number of Pages8
Year2016
PublisherThe Royal Society of Chemistry
Place of PublicationUnited Kingdom
ISSN2046-2069
Digital Object Identifier (DOI)https://doi.org/10.1039/c6ra02680j
Web Address (URL)http://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra02680j/unauth#!divAbstract
Abstract

In this paper, a novel composite of graphene/MnO2 (GR/MnO2) was successfully synthesized by a simple one-step hydrothermal method. The as-synthesized MnO2 and the composite were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The results showed that MnO2 was nanorods and the two materials were perfectly composited. The composite was decorated on a glassy carbon electrode (GCE) and used for the entrapment of glucose oxidase (GOD). Electrochemical results showed that the
composite modified electrode showed a pair of well-defined redox peaks, and the direct electron transfer between GOD and the electrode surface was accelerated. The sensor fabricated by the composite modified electrode showed an excellent response to the oxidation of glucose with a wide
linear range (0.04 to 2 mM), low detection limit (10 mM), and high sensitivity (3.3 mA mM-1 cm-2). The sensor also exhibited excellent reproducibility, stability and selectivity, and it can be used in the determination of glucose in real samples.

Keywordsbiosensor; hydrothermal method; MnO2/graphene composite modified electrode
ANZSRC Field of Research 2020340103. Electroanalytical chemistry
Byline AffiliationsChinese Academy of Tropical Agricultural Sciences, China
Centre of Excellence in Engineered Fibre Composites
China Tobacco Guizhou Industrial, China
Institution of OriginUniversity of Southern Queensland
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