期刊
NANOSCALE
卷 6, 期 13, 页码 7424-7429出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr01611d
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资金
- Jiangsu Provincial Founds for Distinguished Young Scholars [BK20130046]
- National Basic Research Program of China [2012CB933300]
- NNSF of China [21275076, 61328401]
- Key Project of Chinese Ministry of Education [212058]
- Program for New Century Excellent Talents in University [NCET-13-0853]
- Research Fund for the Doctoral Program of Higher Education of China [20123223110008]
- Ministry of Education of China [IRT1148]
- Singapore Ministry of Education under the AcRF Tier 2 grant [MOE2011-T2-2-010]
Three-dimensional graphene foam (3DGF) is a superior sensing material because of its high conductivity, large specific surface area and wide electrochemical potential windows. In this work, hexagonal Ni(OH)(2) nanosheets are deposited on the surface of chemical vapor deposition-grown 3DGF through a facial hydrothermal process without any auxiliary reagents. The morphology and structure of the composite are characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), Raman spectroscopy, and X-ray diffraction (XRD). Based on the Ni(OH)(2)/3DGF composite, a free-standing electrochemical electrode is fabricated. Being employed as a nonenzymatic glucose detection electrochemical electrode, it exhibits a high sensitivity (similar to 2.65 mA mM(-1) cm(-2)), low detection limit (0.34 mu M) and excellent selectivity with a linear response from 1 mu M to 1.17 mM. The excellent sensing properties of the Ni(OH)(2)/3DGF electrode may be attributed to the synergistic effect of the high electrocatalytic activity of Ni(OH)(2) nanosheets and the high conductivity and large surface area of 3DGF.
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