Graphene-Functionalized 3D-Carbon Fiber Electrodes - Preparation and Electrochemical Characterization

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• 作者：Ashkan Koushanpour ; Nataliia Guz ; Maria Gamella and Evgeny Katz
• 刊名：Electroanalysis
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：28
• 期：9
• 页码：1943-1946
• 全文大小：1055K
• ISSN：1521-4109

文摘

Graphene nanosheets were produced on the surface of carbon fibers by in situ electrochemical procedure including oxidative and reductive steps to yield first graphene oxide, later converted to graphene. The electrode material composed of graphene-functionalized carbon fibers was characterized by scanning electron microscopy (SEM) and cyclic voltammery demonstrating superior electrochemical kinetics comparing with the original carbon paper. The interfacial electron transfer rate for the reversible redox process of [Fe(CN)₆]^3−/4− was found ca. 4.5-fold higher after the electrode modification with the graphene nanosheets. The novel electrode material is suggested as a promising conducting interface for bioelectrocatalytic electrodes used in various electrochemical biosensors and biofuel cells, particularly operating in vivo.