Fabrication of Nickel/nanodiamond/boron-doped diamond electrode for non-enzymatic glucose biosensor
Fabrication of Nickel/nanodiamond/boron-doped diamond electrode for non-enzymatic glucose biosensor
复制标题
非酶葡萄糖生物传感器用镍/纳米金刚石/硼掺杂金刚石电极的制备
DOI：
10.1016/j.electacta.2015.11.085
复制
发表时间：
2016-01-01
影响因子：
6.6
通讯作者：
Yang, Baohe
中科院分区：
文献类型：
--
作者：
Dai, Wei;Li, Mingji;Yang, Baohe
通过用镍（Ni）纳米片和纳米金刚石（NDs）修饰硼掺杂金刚石（BDD）电极，制备了一种稳定且灵敏的非酶葡萄糖传感器。纳米金刚石通过电泳沉积在BDD表面，并作为后续电沉积镍的成核位点。分别用场发射扫描电子显微镜和能量色散X射线光谱对修饰后的BDD电极的形貌和成分进行了表征。镍纳米片 - 纳米金刚石修饰的BDD电极对碱性介质中葡萄糖的非酶氧化表现出良好的电流响应。纳米金刚石显著拓宽了电位窗口。在0.2 - 1055.4 μM范围内，对葡萄糖的响应呈线性。在信噪比为3时，检测限为0.05 μM。镍纳米片 - 纳米金刚石/BDD电极具有良好的选择性、重现性和稳定性。其电化学性能、低成本和制备简单使其成为一种有前景的非酶葡萄糖传感器。（C）2015爱思唯尔有限公司。保留所有权利。
A stable and sensitive non-enzymatic glucose sensor was prepared by modifying a boron-doped diamond (BDD) electrode with nickel (Ni) nanosheets and nanodiamonds (NDs). The NDs were electrophoretically deposited on the BDD surface, and acted as nucleation sites for the subsequent electrodeposition of Ni. The morphology and composition of the modified BDD electrodes were characterized by field-emission scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively. The Ni nanosheet-ND modified BDD electrode exhibited good current response towards the non-enzymatic oxidation of glucose in alkaline media. The NDs significantly extended the potential window. The response to glucose was linear over the 0.2-1055.4-mu M range. The limit of detection was 0.05 mu M, at a signal-to-noise ratio of 3. The Ni nanosheet-ND/BDD electrode exhibited good selectivity, reproducibility and stability. Its electrochemical performance, low cost and simple preparation make it a promising non-enzymatic glucose sensor. (C) 2015 Elsevier Ltd. All rights reserved.