The rectangular flake-like mesoporous NiCo_2O_4（meso-NiCo_2O_4） catalysts were first used in glucose bio-sensing and glucose biofuel cell（GBFC） as an enzyme mimic simultaneously. The meso-NiCo_2O_4 displayed excel...The rectangular flake-like mesoporous NiCo_2O_4（meso-NiCo_2O_4） catalysts were first used in glucose bio-sensing and glucose biofuel cell（GBFC） as an enzyme mimic simultaneously. The meso-NiCo_2O_4 displayed excellent catalytic capability to glucose including a super-fast response time（within1 s）, a super-high sensitivity（662.31 μA（mmol L^（-1））^（-1）cm^（-2））,and a super-low detection limit（0.3 nmol L^（-1）at S/N = 3） on the sensor. On the other hand, meso-Ni Co_2O_4 provided great values in GBFC as anode material with an open circuit voltage of0.63 V, a maximum power density of 0.092 m W cm^（-2）, and a limiting current density of 1.3 m A cm^（-2）, respectively. The preeminent catalytic abilities may be attributed to the large specific surface area resulting from the mesoporous structure and the surpassing intrinsic catalytic activity of Ni Co_2O_4 itself.These significant findings may promote the development of the supersensitive detection of glucose and will undoubtedly widen the catalytic materials for biofuel cell electrodes.展开更多
基金supported by the National Natural Science Foundation of China (21671132 and 81301345)Shanghai Natural Science Foundation (14ZR1450000)support from Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University
文摘The rectangular flake-like mesoporous NiCo_2O_4（meso-NiCo_2O_4） catalysts were first used in glucose bio-sensing and glucose biofuel cell（GBFC） as an enzyme mimic simultaneously. The meso-NiCo_2O_4 displayed excellent catalytic capability to glucose including a super-fast response time（within1 s）, a super-high sensitivity（662.31 μA（mmol L^（-1））^（-1）cm^（-2））,and a super-low detection limit（0.3 nmol L^（-1）at S/N = 3） on the sensor. On the other hand, meso-Ni Co_2O_4 provided great values in GBFC as anode material with an open circuit voltage of0.63 V, a maximum power density of 0.092 m W cm^（-2）, and a limiting current density of 1.3 m A cm^（-2）, respectively. The preeminent catalytic abilities may be attributed to the large specific surface area resulting from the mesoporous structure and the surpassing intrinsic catalytic activity of Ni Co_2O_4 itself.These significant findings may promote the development of the supersensitive detection of glucose and will undoubtedly widen the catalytic materials for biofuel cell electrodes.
