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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Nonenzymatic Sensor Based on NiOFe2O3@carbon Nanotubes Nanocomposite for Determination of Paraoxon in Fruits and Water
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Electrochemical Nonenzymatic Sensor Based on NiOFe2O3@carbon Nanotubes Nanocomposite for Determination of Paraoxon in Fruits and Water

机译：基于Niofe2O3碳纳米管纳米复合材料的电化学非酶传感器测定水果和水中的律素

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Here, the NiOFe2O3@CNTs nanocomposite modified glassy carbon electrode (NiOFe2O3@CNTs/GCE) as nonenzymatic sensor was prepared for electrochemical determination of paraoxon in agricultural wastewater and apple juice. The sol–gel technique was used to synthesize the prepared nanocomposite. The structural and morphological characterizations of the nanocomposite were done by XRD and SEM analyses. The structural results showed that NiOFe2O3@CNTs/GCE composite has a high purity and great crystallinity with face-centered cubic structure of NiO nanoparticles (NiO NPs) and γ-Fe2O3nanoparticles (Fe2O3 NPs) which well distributed on the walls of CNTs. Electrochemical studies were done by voltammetry and amperometry techniques which exhibited that the synergistic effect of CNTs, NiO and Fe2O3 NPs in the nanocomposite can improved the electron transfer properties and electrocatalytic response of the nanocomposite to paraoxon. The limit of detection, sensitivity and linear range were obtained of 0.001 μM, 0.22246 μA/ μM and 10 to 220 μM, respectively. Applied studies on the paraoxon sensor for determination of paraoxon in prepared real samples showed the good accuracy and acceptable values of recovery and RSD. Thus, the proposed sensor can be reliable and effective for the determination of paraoxon in real samples.
机译：这里，制备作为非酶传感器的NiOfe2O3 @ C​​NT纳米复合材料改性玻璃电极（NiOfe2O3 @ C​​NTS / GCE）用于电化学测定农业废水和苹果汁中的副植物。溶胶 - 凝胶技术用于合成制备的纳米复合材料。通过XRD和SEM分析来完成纳米复合材料的结构和形态学。结构结果表明，NioFe2O3 @ C​​NT / GCE复合材料具有高纯度和大结晶度，具有良好的NiO纳米颗粒（NiO NPS）和γ-Fe 2 O 3 NONOM（Fe 2 O 3 NP）的中心立方体结构，其良好分布在CNT的壁上。通过伏安法和安培测量技术进行电化学研究，该技术表现出CNTs，NiO和Fe 2 O 3 NP的协同作用可以改善纳米复合材料的电子转移性和电催化反应至律植物。检测极限，灵敏度和线性范围分别获得0.001μm，0.22246μA/μm和10至220μm。用于测定制备的真实样品中律植物的副4传感器的应用研究表明，恢复和RSD的良好准确性和可接受的值。因此，所提出的传感器可以可靠且有效地用于确定真实样品中的律毒素。

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