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Graphene‐Functionalized 3D‐Carbon Fiber Electrodes – Preparation and Electrochemical Characterization
Author(s) -
Koushanpour Ashkan,
Guz Nataliia,
Gamella Maria,
Katz Evgeny
Publication year - 2016
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201600110
Subject(s) - graphene , materials science , electrode , electrochemistry , electron transfer , scanning electron microscope , redox , biosensor , nanotechnology , oxide , scanning electrochemical microscopy , chemical engineering , carbon fibers , chemistry , composite number , composite material , photochemistry , engineering , metallurgy
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 .