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Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces

College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa 252-5258, Japan
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Crystals 2020, 10(4), 241; https://doi.org/10.3390/cryst10040241
Received: 5 February 2020 / Revised: 19 March 2020 / Accepted: 23 March 2020 / Published: 26 March 2020
(This article belongs to the Special Issue 2D Materials: From Structures to Functions)
In research on enzyme-based biofuel cells, covalent or noncovalent molecular modifications of carbon-based electrode materials are generally used as a method for immobilizing enzymes and/or mediators. However, the influence of these molecular modifications on the electrochemical properties of electrode materials has not been clarified. In this study, we present the electrochemical properties of chemical vapor deposition (CVD)-grown monolayer graphene electrodes before and after molecular modification. The electrochemical properties of graphene electrodes were evaluated by cyclic voltammetry and electrochemical impedance measurements. A covalently modified graphene electrode showed an approximately 25-fold higher charge transfer resistance than before modification. In comparison, the electrochemical properties of a noncovalently modified graphene electrode were not degraded by the modification. View Full-Text
Keywords: graphene; surface modification; enzymatic biofuel cell; electrochemistry graphene; surface modification; enzymatic biofuel cell; electrochemistry
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MDPI and ACS Style

Miki, K.; Watanabe, T.; Koh, S. Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces. Crystals 2020, 10, 241. https://doi.org/10.3390/cryst10040241

AMA Style

Miki K, Watanabe T, Koh S. Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces. Crystals. 2020; 10(4):241. https://doi.org/10.3390/cryst10040241

Chicago/Turabian Style

Miki, Keishu, Takeshi Watanabe, and Shinji Koh. 2020. "Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces" Crystals 10, no. 4: 241. https://doi.org/10.3390/cryst10040241

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