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Authors = Keishu Miki

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11 pages, 10118 KiB  
Article
Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces
by Keishu Miki, Takeshi Watanabe and Shinji Koh
Crystals 2020, 10(4), 241; https://doi.org/10.3390/cryst10040241 - 26 Mar 2020
Cited by 6 | Viewed by 4069
Abstract
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue 2D Materials: From Structures to Functions)
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