| 基于CoP纳米笼的高效无酶葡萄糖电化学传感器 |
| CoP Nanocage-Based Efficient Non-enzymatic Glucose Electrochemical Sensor |
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| 摘要: 采用水热法和煅烧结合的方法制备过渡金属磷化钴（CoP）纳米笼，并利用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、扫描透射电子显微镜（STEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）表征CoP的形貌、结构和元素组成。研究发现，所合成的CoP具有中空纳米笼的结构，该结构有利于提供更多可接触的催化活性位点，促进电子或离子的传输，加快催化反应过程。采用循环伏安法（CV）和计时电流法研究表明CoP纳米笼对葡萄糖具有优异的电催化氧化活性。基于CoP纳米笼修饰的玻碳电极构建的无酶葡萄糖电化学传感器显示出优异的性能。该传感器具有宽的线性范围（0.04~3 mmol·L-1和3~8 mmol·L-1）、低的检测限（3.8 μmol·L-1）和高的灵敏度，以及良好的选择性、重复性、重现性和稳定性。另外，该传感器能够实现人体血清中葡萄糖的快速检测。 |
| 关键词: 电化学 传感器 循环伏安法 CoP纳米笼 电催化活性 葡萄糖 |
| 基金项目: 河北省自然科学基金（No.B2019206437）和河北省高等学校青年拔尖人才计划项目（No.BJ2020034）资助。 |
| Abstract: Transition metal cobalt phosphide (CoP) nanocage was prepared by a combination of hydrothermal and calcination method. Scanning electron microscope (SEM), transmission electron microscope (TEM), scanning trans-mission electron microscope (STEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology, structure, and elemental composition of CoP. The study found that the synthesized CoP had a hollow nanocage structure, which is conducive to providing more accessible catalytic active sites, promoting the transport of electrons or ions, and accelerating the catalytic reaction process. Cyclic voltammetry (CV) and chronoamperometry studies displayed that CoP nanocages had excellent electrocatalytic oxidation activity toward glucose. The non-enzymatic glucose electrochemical sensor based on the CoP nanocage modified glassy carbon electrode showed excellent performance. The sensor has wide linear ranges (0.04~3 mmol·L-1 and 3~8 mmol·L-1), low detection limit (3.8 μmol·L-1), high sensitivity, good selectivity, repeatability, reproducibility and stability. In addition, the sensor can be applied to quickly determination of glucose in real human serum sample. |
| Keywords: electrochemistry sensor cyclic voltammetry CoP nanocage electrocatalytic activity glucose |
| 投稿时间：2020-02-27 修订日期：2020-06-15 |
| 摘要点击次数: 1865 |
| 全文下载次数: 1108 |
| 吕雪义,刘俊果,朱艳艳.基于CoP纳米笼的高效无酶葡萄糖电化学传感器[J].无机化学学报,2020,36(9):1675-1682. |
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