Herein, a cost-effective and scalable ultrasound assisted approach was proposed to prepare the nanocomposite of halloysite nanotubes/zirconia/carbon black (Hal/ZrO₂/CB), which was used to fabricate a novel electrochemical sensor for the highly sensitive determination of methyl parathion (MP). In the Hal/ZrO₂/CB nanocomposite, Hal with large specific surface area and numerous active sites could enhance the adsorption capacity and accelerate the redox reaction of MP; ZrO₂ nanoparticles with high affinity toward the phosphate group could contribute to good recognition performance for MP; CB nanoparticles with good dispersibility formed an interconnected pearl-chain-like conductive network. Benefitting from the synergistic effect of the three components, the Hal/ZrO₂/CB/GCE (glassy carbon electrode) sensor showed a remarkably low detection limit of 5.23 nM in a good linear MP detection range of 0.01–10 μM. The Hal/ZrO₂/CB/GCE sensor possessed a pretty decent practicality with satisfactory RSD and recovery results for the determination of MP in peach, pear, and apple juices. Therefore, the Hal/ZrO₂/CB/GCE sensor has important implication on the quite sensitive detection of MP.

在此，提出了一种经济高效且可扩展的超声辅助方法来制备埃洛石纳米管/氧化锆/炭黑（Hal / ZrO ₂ / CB）的纳米复合材料，该方法可用于制造新型的用于高度灵敏测定甲基的电化学传感器对硫磷（MP）。在Hal / ZrO ₂ / CB纳米复合材料中，具有大的比表面积和众多活性位点的Hal可以增强MP的吸附能力并加速其氧化还原反应。氧化锆₂对磷酸酯基团具有高亲和力的纳米颗粒可有助于MP的良好识别性能；具有良好分散性的CB纳米粒子形成了相互连接的珍珠链状导电网络。得益于这三种成分的协同作用，Hal / ZrO ₂ / CB / GCE（玻璃碳电极）传感器在0.01-10μM的良好线性MP检测范围内显示出5.23 nM的极低检测限。Hal / ZrO ₂ / CB / GCE传感器具有相当不错的实用性，具有令人满意的RSD和回收率，可用于测定桃，梨和苹果汁中的MP。因此，Hal / ZrO ₂ / CB / GCE传感器对MP的灵敏检测具有重要意义。