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Vol. 32, No. 8(2), S&M2292

ISSN (print) 0914-4935
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Sensors and Materials, Volume 31, Number 4(1) (2019)
Copyright(C) MYU K.K.
pp. 1167-1179
S&M1843 Research Paper of Special Issue (Invited)
https://doi.org/10.18494/SAM.2019.2124
Published: April 11, 2019

Facile Preparation of Hemin-functionalized Electrochemically Reduced Graphene Oxide Nanocomposite for H2O2 Biosensing [PDF]

Zhi Chen, Dong Liu, Chengxi Zhu, Libo Li, and Tianyan You

(Received August 30, 2018; Accepted December 27, 2018)

Keywords: Hemin, electrochemically reduced graphene oxide, nonenzymatic biosensor, hydrogen peroxide

A Hemin-functionalized electrochemically reduced graphene oxide (H-ERGO) nanocomposite was prepared for the construction of a nonenzymatic H2O2 biosensor. H-ERGO was directly modified on the electrode surface without using a binder by electrochemical reduction. Detailed physical and electrical characterizations of H-ERGO were conducted by scanning electron microscopy, UV-vis absorption spectroscopy, and electrochemical impedance spectroscopy (EIS). Taking advantage of the superior catalytic properties of H-ERGO, we applied the proposed biosensor to H2O2 analysis. Under optimized conditions, the H-ERGO-based biosensor exhibited a wide linear range from 25 to 8850 and 8850 to 28850 μM, with a detection limit (S/N = 3) of 8.33 μM for H2O2 determination. Furthermore, it was also successfully applied to detect H2O2 in milk samples with recoveries ranging from 94.6 to 98.1%.

Corresponding author: Dong Liu, Tianyan You


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Cite this article
Zhi Chen, Dong Liu, Chengxi Zhu, Libo Li, and Tianyan You, Facile Preparation of Hemin-functionalized Electrochemically Reduced Graphene Oxide Nanocomposite for H2O2 Biosensing, Sens. Mater., Vol. 31, No. 4, 2019, p. 1167-1179.



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