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用Pd纳米颗粒装饰的新型多相复合电极用于除草剂的电化学测定

Jelena Milićević¹, Marija Prekajski Đorđević², Aleksandra Dimitrijević³

¹Department for Bioinformatics and Computational Chemistry, VINČA Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11351, Belgrade, Serbia.

Mikrochimica acta

|August 20, 2025

概括

一种新型的装饰着的多相复合电极 (Pd@MPC) 能够对迪坎巴 (DIC) 和2,4-D农药进行敏感的电化学检测. 这种先进的传感器为环境监测应用提供了更好的性能.

科学领域:

电化学
材料科学
环境科学

背景情况:

迪坎巴 (DIC) 和2,4-D是广泛使用的除草剂,具有潜在的环境影响.
准确而敏感的检测方法对于监测环境中的农药含量至关重要.
现有的电化学传感器可能需要进一步提高灵敏度和选择性.

研究的目的:

开发和描述一种用于电化学测定DIC和2,4-D的装饰多相复合电极.
研究复合材料对电化学性能的协同效应.
评估开发的电极是否适合环境监测.

主要方法:

用纳米粒子 (Pd@MPC) 装饰的多相复合电极 (TiN/Ti1.886O3/MgTiO3/Mg2TiO4) 的制造.
使用X射线衍射 (XRD),富里埃变换红外光谱 (FTIR) 和场辐射扫描电子显微镜 (FESEM) 进行电极材料的表征.
使用Pd@MPC修改的玻璃碳电极进行电化学测定DIC和2,4-D.

主要成果:

由于其复合相的协同作用,Pd@MPC电极表现出增强的电催化活性和稳定性.
在pH值为2. 0时,DIC和2. 4-D的线性范围为4. 99到53. 82 ng/ mL.
在河水样本中达到3.03 ng/mL的低检测极限,回收率高 (101%),与HPLC/DAD结果一致.

结论:

Pd@MPC/GC电极为电化学检测DIC和2,4-D提供了一个高度敏感和选择性的平台.
开发的方法显示出对除草剂污染的实际环境监测有很大的希望.
多相复合材料的协同性能是其优越的电分析性能的关键.

关键词:

差分脉冲剥离电压测量环境监测多相复合材料 Pd纳米粒子

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