Hu Haibing, Hu Yunhu, Xie Baozhu, Zhu Jianxiong
Academy of Opto-Electric Technology, Special Display and Imaging Technology Innovation Center of Anhui Province, National Engineering Laboratory of Special Display Technology, State Key Laboratory of Advanced Display Technology, Collaborative Innovation Center of Advanced Display Technology, Anhui Key Laboratory of Advanced Imaging and Display Technology, Opto-Electric Display Industry Innovation Center, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology, Hefei 230009, China.
School of Mechanical Engineering, Southeast University, Nanjing 211189, China.
Nanomaterials (Basel). 2023 Aug 9;13(16):2288. doi: 10.3390/nano13162288.
Currently, heavy metal ion pollution in water is becoming more and more common, especially As (III), which is a serious threat to human health. In this experiment, a glassy carbon electrode modified with FeO/MoS nanocomposites was used to select the square wave voltammetry (SWV) electrochemical detection method for the detection of trace As (III) in water. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) showed that FeO nanoparticles were uniformly attached to the surface of MoS and were not easily agglomerated. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) showed that FeO/MoS has higher sensitivity and conductivity. After optimizing the experimental conditions, the FeO/MoS-modified glassy carbon electrode exhibited high sensitivity (3.67 μA/ppb) and a low detection limit (0.70 ppb), as well as excellent interference resistance and stability for As (III).
目前，水中重金属离子污染日益普遍，尤其是砷（III），这对人类健康构成严重威胁。在本实验中，采用FeO/MoS纳米复合材料修饰的玻碳电极，选用方波伏安法（SWV）电化学检测方法检测水中痕量砷（III）。扫描电子显微镜（SEM）和X射线衍射（XRD）表明，FeO纳米颗粒均匀附着在MoS表面，不易团聚。循环伏安法（CV）和电化学阻抗谱（EIS）表明，FeO/MoS具有更高的灵敏度和导电性。优化实验条件后，FeO/MoS修饰的玻碳电极对砷（III）表现出高灵敏度（3.67 μA/ppb）、低检测限（0.70 ppb）以及优异的抗干扰能力和稳定性。
