A non-enzymatic electrochemical sensor (modified carbon paste electrode (CPE) using La₂O₃–Co₃O₄ nanocomposite and ionic liquid) was made for sensitive quantification of hydrazine. The scanning electron microscopic (SEM), X-ray powder diffraction (XRD) as well as Fourier transform infrared spectroscopy (FT-IR) were employed for finding the nanocomposite characteristics. The electrochemical measurements revealed that combination of La₂O₃–Co₃O₄ nanocomposite and ionic liquid and carbon paste showed very good voltammetric responses toward hydrazine oxidation with the broad linear ranges between 0.1 and 120.0 μM and low detection limit (DL) of 0.01 μM, and 203.6 μA mM⁻¹ cm⁻² sensitivity. Then, hydrazine in different water samples was determined by the standard addition procedure. We observed reasonable findings with relative standard deviation (RSD) of less than 3.4% and 96.0–103.0% recovery for 5 parallel measurements. Hence, La₂O₃–Co₃O₄/CPE can be considered as one of the novel platforms for hydrazine to be electrochemically detected.

制造了一种非酶电化学传感器（使用 La ₂ O ₃ –Co ₃ O ₄纳米复合材料和离子液体的改性碳糊电极 (CPE) ）用于肼的灵敏定量。采用扫描电子显微镜 (SEM)、X 射线粉末衍射 (XRD) 以及傅里叶变换红外光谱 (FT-IR) 来发现纳米复合材料的特性。电化学测量表明，La ₂ O ₃ –Co ₃ O _{4 的组合}纳米复合材料、离子液体和碳糊对肼氧化表现出非常好的伏安响应，线性范围在 0.1 到 120.0 μM 之间，检测下限 (DL) 为 0.01 μM，灵敏度为203.6 μA mM ^-1  cm ^-2。然后，通过标准添加程序测定不同水样中的肼。我们观察到合理的结果，5 次平行测量的相对标准偏差 (RSD) 小于 3.4%，回收率为 96.0-103.0%。因此，La ₂ O ₃ –Co ₃ O ₄ /CPE 可以被认为是用于电化学检测肼的新型平台之一。