Micro-cubic monolithic carbon cryogel electrode for direct electron transfer reaction of fructose dehydrogenase

Micro-cubic monolithic carbon cryogel (CCG) electrode was fabricated for the electrochemical fructose dehydrogenase (FDH) reaction. The CCG can adsorb a sufficient amount of FDH even inside the CCG structure. FDH inside the CCG worked well as an electrocatalyst for d-fructose oxidation. An extremely high catalytic current density as large as 0.6 A/cm3 was achieved under stirring condition.

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► Electro-enzymatic oxidation of fructose without mediator.
► Enzyme immobilized inside the mesoporous carbon.
► Extremely high catalytic current density of 0.6 A cm− 3.