基于NiO/MoS2/氧化石墨烯复合材料的新型电化学传感器用于甲基对硫磷的快速检测。

IF 5.3 2区 化学 Q1 CHEMISTRY, ANALYTICAL
Chong Tan, Xueyan Liu, Kaijie Yang, Junsheng Li, Yuhong Yin, Jinlong Zuo
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引用次数: 0

摘要

研制了一种新型电化学传感器(NiO/MoS₂/rGO/GCE),用于农药残留甲基对硫磷(MP)的灵敏检测。通过水热法和溶剂热法合成了NiO/MoS 2 /rGO复合材料,通过扫描电镜、x射线衍射和x射线光电子能谱验证了NiO/MoS 2 /rGO复合材料的成功形成和优化的微观结构特征。实验结果表明,NiO的加入显著增加了电化学活性位点和电子传递效率,从而使传感器对MP的线性检测范围为0.01 ~ 10 μg/mL,同时检测限为1.1 ng/mL (S/N = 3)。此外,该传感器具有优异的抗干扰性能,在实际样品(苹果汁)分析中,回收率为97.7 ~ 108.8%,相对标准偏差(RSD)为2.7 ~ 5.2%。总的来说,本研究为高灵敏度的农药残留检测提供了一种有前景且具有成本效益的方法,强调了其广泛实际应用的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A novel electrochemical sensor based on NiO/MoS2/rGO composite material for rapid detection of methyl parathion

A novel electrochemical sensor based on NiO/MoS2/rGO composite material for rapid detection of methyl parathion

A novel electrochemical sensor (NiO/MoS₂/rGO/GCE) designed for the sensitive detection of methyl parathion (MP) pesticide residues has been developed. The NiO/MoS₂/rGO composite was synthesized via hydrothermal and solvothermal methods, with successful formation and optimized microstructural characteristics validated through scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Empirical results demonstrated that the incorporation of NiO markedly augmented both the electrochemically active sites and electron-transfer efficiency, thereby enabling the sensor to achieve an excellent linear detection range of 0.01–10 μg/mL for MP, accompanied by a notably low detection limit of 1.1 ng/mL (S/N = 3). Furthermore, the sensor exhibited superior anti-interference performance, achieving recovery percentages ranging from 97.7 to 108.8% in practical sample analyses (apple juice), with relative standard deviations (RSD) between 2.7 and 5.2%. Overall, this research offers a promising and cost-effective approach for highly sensitive pesticide residue detection, underscoring its substantial potential for broad practical applications.

Graphical Abstract

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来源期刊
Microchimica Acta
Microchimica Acta 化学-分析化学
CiteScore
9.80
自引率
5.30%
发文量
410
审稿时长
2.7 months
期刊介绍: As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.
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