基于 NiCoS 多孔球的高性能非酶电化学肼传感器。
A high-performance non-enzymatic electrochemical hydrazine sensor based on NiCoS porous sphere.
机构信息
College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi'an, Shaanxi 710069, China; School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750001, China.
College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi'an, Shaanxi 710069, China.
出版信息
Talanta. 2019 Jun 1;198:23-29. doi: 10.1016/j.talanta.2019.01.081. Epub 2019 Jan 25.
A non-enzymatic electrochemical sensor-NiCoS/GCE was constructed for sensitive and selective detection of hydrazine (NH), which was designed based on porous nanostructure and synthesized through a facile hydrothermal method. The nanocomposite has been characterized using a series of characterizations such as X-ray powder diffraction (XRD), scanning electron microscopic (SEM), transmission electron microscopy (TEM), showing the porous NiCoS sphere was made of interconnected nanoparticles with porous structure. Electrochemical measurements revealed that the porous NiCoS sphere based sensor exhibited an excellent voltammetric response towards the NH oxidation with a wide linear range of 1.7 μM to 7.8 mM, a low detection limit of 0.6 μM (S/N = 3), a sensitivity of 179.1 μA mM cm. Moreover, determinations of NH in tap water samples were carried out by standard addition. Acceptable results with relative standard deviation of 2.1-3.0% and recovery of 95.20-103.6% were obtained for five parallel measurements. Therefore, NiCoS/GCE promised to be a new platform for electrochemical detection of NH.
一种非酶电化学传感器-NiCoS/GCE 被构建用于灵敏和选择性检测肼 (NH)，该传感器基于多孔纳米结构，并通过简便的水热法合成。该纳米复合材料已经通过一系列的表征进行了表征，例如 X 射线粉末衍射 (XRD)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)，表明多孔 NiCoS 球由具有多孔结构的相互连接的纳米颗粒制成。电化学测量表明，基于多孔 NiCoS 球的传感器对 NH 氧化具有出色的伏安响应，具有 1.7 μM 至 7.8 mM 的宽线性范围、0.6 μM 的低检测限 (S/N=3) 和 179.1 μA mM cm 的灵敏度。此外，通过标准添加法对自来水中的 NH 进行了测定。五个平行测量的相对标准偏差为 2.1-3.0%，回收率为 95.20-103.6%，得到了可接受的结果。因此，NiCoS/GCE 有望成为电化学检测 NH 的新平台。
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