Abstract

In this work, A nanocomposite film composed of multi-walled carbon nanotube arrays (MWCNTA) filled with Prussian Blue (PB) was prepared, and it was successfully applied in the electrochemical Sensing of H₂O₂. The nanostructure of MWCNTA/PB was characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The electrochemical behavior was investigated by cyclic voltammetry (CV). The excellent catalytic reduction performance of H₂O₂ by MWCNTA/PB was observed and applied as a H₂O₂ electrochemical sensor. It is found that the linear detection range of the sensor is 10 μM to 110 μM and the sensitivity is 0.407 μA μM^–1, as well as the detection limit is 0.21 μM. The interference experiment results showed that uric acid, dopamine, glucose and ascorbic acid could not affect the electrochemical detection of H₂O₂, indicating that the sensor has good stability and anti-interference.

摘要

在这项工作中，制备了一种由多壁碳纳米管阵列（MWCNTA）填充普鲁士蓝（PB）组成的纳米复合薄膜，并成功应用于H ₂ O ₂的电化学传感。MWCNTA/PB 的纳米结构通过透射电子显微镜 (TEM) 和扫描电子显微镜 (SEM) 进行表征。通过循环伏安法（CV）研究电化学行为。观察到MWCNTA/PB对H ₂ O ₂的优异催化还原性能并将其用作H ₂ O ₂电化学传感器。发现传感器的线性检测范围为10 μM～110 μM，灵敏度为0.407 μA μM ^–1，以及检测限为 0.21 μM。干扰实验结果表明，尿酸、多巴胺、葡萄糖和抗坏血酸对H ₂ O ₂的电化学检测没有影响，表明该传感器具有良好的稳定性和抗干扰性。