微分脉冲伏安法
材料科学
非阻塞I/O
检出限
对苯二甲酸
循环伏安法
煅烧
电化学气体传感器
电化学
异烟肼
化学工程
电极
无机化学
分析化学(期刊)
核化学
催化作用
化学
物理化学
色谱法
有机化学
复合材料
病理
工程类
聚酯纤维
医学
肺结核
作者
Jingjing Wang,Junhong Zhao,Jiao Yang,Jing Cheng,Yongzhu Tan,Huanhuan Feng,Yingchun Li
标识
DOI:10.1007/s00604-020-04305-8
摘要
The electrocatalytic activity of metal-organic framework (MOF)-derived NiO@ZnO hollow microspheres was studied for its application to an isoniazid sensor. The MOF-derived NiO@ZnO hollow spheres were synthesized by the coordination reaction of terephthalic acid with Zn2+ and Ni2+ and followed by calcination. Morphology characterization showed that the MOF-derived NiO@ZnO sphere has circular core-shell structure with pores on its surface. Further electrochemical characterization of the prepared sensor by cyclic voltammetry and differential pulse voltammetry proved that the material has good electrical conductivity and strong catalytic ability. Distinct oxidation peaks occur for INZ at potential of 0.22 V (vs. saturated calomel electrode). Under the optimal experimental conditions, the linear range of the sensor for isoniazid determination was 0.8 ~ 800 μM, and the detection limit was 0.25 μM (S/N = 3). In addition, the sensor displayed good stability, repeatability, and reproducibility. The established method was successfully applied for determination of isoniazid in tablets and mouse serum with admirable accuracy and reliability.
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