期刊
THIN SOLID FILMS
卷 520, 期 24, 页码 7219-7223出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2012.08.011
关键词
Boron-doped diamond; Nanocrystalline diamond; Copper hydroxide; Nanostructures; Amperometric glucose sensor; Crystallization from solution; Chemical vapor deposition
类别
资金
- National Research Foundation of Korea (NRF)
- Korean Government (MEST) [2011-0000427]
A non-enzymatic biosensor was developed using boron-doped nanocrystalline diamond (BDND) based on a Cu electrode with Cu(OH)(2) dendritic architecture. The Cu(OH)(2) nanoflower electrode was covered with a BDND layer using an electrostatic self-assembly seeding method with nanodiamond particles and hot-filament chemical vapor deposition. X-ray diffraction and Raman spectral analysis confirmed that the BDND nanoflower electrode was synthesized onto Cu(OH)(2) nanoflowers. Field-emission scanning electron microscope images showed that the fabricated electrodes were nanoflowers possessing large surface areas. From cyclic voltammetry, the peak currents of an BDND/Cu(OH)(2)/Cu electrode was about 7, 6.2, and 5.9 times higher than that of the Cu foil, Cu(OH)(2)/Cu, and BDND/Cu electrodes, respectively. A biosensor based on BDND/Cu(OH)(2)/Cu exhibited excellent performance for glucose detection, and it had a linear detection range of 0 to 6 mM, a correlation coefficient of 0.9994, a low detection limit of 9 mu M, and a high sensitivity of 2.1592 mA mM(-1) cm(-1). (C) 2012 Elsevier B.V. All rights reserved.
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