A novel non-enzymatic amperometric glucose sensor based on a hollow Pt–Ni alloy nanotube array electrode with enhanced sensitivity
A novel non-enzymatic amperometric glucose sensor based on a hollow Pt–Ni alloy nanotube array electrode with enhanced sensitivity
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DOI：
10.1039/c5ra13383a
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发表时间：
2015-08
期刊：
影响因子：
3.9
通讯作者：
Yanli Sun;Hongyan Yang;Xiaohui Yu;Hao Meng;Xinhua Xu
中科院分区：
文献类型：
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作者：
Yanli Sun;Hongyan Yang;Xiaohui Yu;Hao Meng;Xinhua Xu
提出了一种基于pt - Ni纳米线的非酶电极作为葡萄糖传感器，该纳米线是在阳极氧化铝膜内通过恒流电沉积和电替代反应制备的。葡萄糖的安培检测线性范围为13.5 mM，灵敏度为124.17 μA mM−1 cm−2，检出限为32 μM （S/N = 3）。更重要的是，Pt-Ni NATs电极的另一个吸引人的特点是- 0.35 V（相对于SCE）的工作电位非常低，这有利于避免可能的中间体的影响。此外，非酶葡萄糖传感器显示出良好的稳定性和可重复性。这些优异的性能都归功于独特的纳米管阵列结构所支持的大活性面积。
A non-enzymatic electrode is proposed as a glucose sensor based on Pt-replaced Ni nanowires which are prepared by constant current electro-deposition within the anodic alumina membrane and galvanic replacement reaction. The amperometric detection of glucose shows a wide linear range up to 13.5 mM with a high sensitivity of 124.17 μA mM−1 cm−2 and a low detection limit of 32 μM (S/N = 3). More important, another attractive feature of the Pt–Ni NATs electrode is the quite low working potential at −0.35 V (versus SCE), which is favorable to avoid the influence of possible intermediates. Furthermore, the non-enzymatic glucose sensors reveal good stability and repeatability. All these excellent properties of the Pt–Ni NATs electrodes can be attributed to the large active area supported by the unique nanotube array structure.