Metallic nickel nitride nanosheet: An efficient catalyst electrode for sensitive and selective non-enzymatic glucose sensing
Metallic nickel nitride nanosheet: An efficient catalyst electrode for sensitive and selective non-enzymatic glucose sensing
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DOI：
10.1016/j.snb.2017.09.095
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发表时间：
2018-02-01
影响因子：
8.4
通讯作者：
Luo, Yonglan
中科院分区：
文献类型：
--
作者：
Xie, Fengyu;Liu, Tingting;Luo, Yonglan
设计无酶电催化剂对葡萄糖（Glu）的灵敏、选择性检测具有重要意义。在本文中，我们报告的金属镍氮化物纳米片在钛网（Ni 3 N NS/Ti）表现为一个有效的三维催化电极，在碱性条件下的谷氨酸电氧化。我们进一步证明了使用这样的Ni 3 N NS/Ti作为非酶电化学Glu传感器在分析性能方面的上级。Ni 3 N NS/Ti的引入可以提供高表面积并导致对Glu的高灵敏度。该传感器对谷氨酸具有快速的安培响应，在5s内可达到稳态电流密度，检测范围为0.2 μ M-1.5mM，检测限为0.06 μ M（S/N =3），响应灵敏度为7688 μ AmM-1cm（-2），具有良好的选择性和重现性。此外，该方法还可用于人血清中谷氨酸的检测，有望应用于真实的样品中谷氨酸的测定。(C)2017爱思唯尔B. V.保留所有权利。
It is significantly important to design enzyme-free electrocatalyst for sensitive and selective detection of glucose (Glu). In this paper, we report that metallic nickel nitride nanosheet on Ti mesh (Ni3N NS/Ti) behaves as an efficient three-dimensional catalyst electrode for Glu electro-oxidation under alkaline conditions. We further demonstrate the use of such Ni3N NS/Ti as a non-enzymatic electrochemical Glu sensor superior in analytical performances. The introduction of the Ni3N NS/Ti can provide a high surface area and lead to high sensitivity to Glu. This sensor shows a fast amperometric response toward Glu and can achieve steady state current density within 5 s, a detection range of 0.2 mu M-1.5 mM, a detection limit of 0.06 mu M (S/N =3), a response sensitivity of 7688 mu AmM-1 cm(-2), and satisfactory selectivity and reproducibility. In addition, it also works effectively for Glu detection in human blood serum, promising its application toward determination of Glu in real samples. (C) 2017 Elsevier B.V. All rights reserved.