期刊
ELECTROCHIMICA ACTA
卷 174, 期 -, 页码 846-852出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.06.086
关键词
Hierarchical nickel oxide superstructures; Foam nickel; Glucose; Sensor; Electrochemistry
资金
- National Natural Science Foundation of China [21165010, 21465014, 21465015]
- Natural Science Foundation of Jiangxi Province [20142BAB203101, 20143ACB21016]
- Ministry of Education by the Specialized Research Fund for the Doctoral Program of Higher Education [20133604110002]
- Ground Plan of Science and Technology Projects of Jiangxi Educational Committee [KJLD14023]
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University [KLFS-KF-201410, KLFS-KF-201416]
The detection of glucose has been attracting more and more attention. The present work provided a novel glucose sensor based on hierarchical NiO superstructures/foam Ni electrode. In this strategy, the foam Ni was chosen as a substrate to grow Ni metal-organic frameworks (NiMOFs) via twin metal source method, and then the hierarchical NiO superstructures/foam Ni electrode was constructed by pyrolyzing the corresponding NiMOFs/foam Ni electrode for the first time. The preparation process was carefully characterized by scanning electron microscopy, thermogravimetric analysis and X-ray powder diffraction. The results showed the NiMOFs on foam Ni electrode with morphology of the flakes. After the NiMOFs/foam Ni electrode was pyrolyzed, the hierarchical NiO superstructures/foam Ni electrode was formed and the hierarchical NiO superstructures uniformly embedded in three-dimensional carbon frameworks to enhance the electrical conductivity of hierarchical NiO superstructures. The electrocatalytic properties of hierarchical NiO superstructures/foam Ni electrode were investigated by cyclic voltammetry, amperometry and chronoamperometry. The novel glucose sensor showed a reasonable linear range of 0.018-1.2 mM and detection limit of 6.15 mu M with a high sensitivity of 395 mu A mmol(-1). Such good result renders it promising candidate for routine testing. (C) 2015 Elsevier Ltd. All rights reserved.
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