Apart from perovskites, the development of different types of pyrochlore oxides is highly focused on various electrochemical applications in recent times. Based on this, we have synthesized pyrochlore-type praseodymium stannate nanoparticles (Pr₂Sn₂O₇ NPs) by using a coprecipitation method and further investigated by different analytical and spectroscopic techniques such as X-ray diffraction, Raman spectroscopy, field emission-scanning electron microscopy, high resolution-transmission electron microscopy, and X-ray photoelectron spectroscopy analysis. Followed by this, we have designed a unique and novel electrochemical sensor for nitrofurazone detection, by modifying the glassy carbon electrode (GCE) with the prepared Pr₂Sn₂O₇ NPs. For that, the electrochemical experiments were performed by using cyclic voltammetry and differential pulse voltammetry techniques. The Pr₂Sn₂O₇ NPs modified GCE exhibits high sensitivity (2.11 μA μM^–1 cm^–2), selectivity, dynamic linear ranges (0.01–24 μM and 32–332 μM), and lower detection limit (4 nM). Furthermore, the Pr₂Sn₂O₇ NPs demonstrated promising real sample analysis with good recovery results in biological samples (human urine and blood serum) which showed better results than the noble metal catalysts. Based on these results, the present work gives clear evidence that the pyrochlore oxides are highly suitable electrode materials for performing outstanding catalytic activity toward electrochemical sensors.

中文翻译：

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烧绿石型Pra酸锡酸盐纳米粒子的合成与表征：生物样品中呋喃酮药物检测的有效电催化剂

除钙钛矿外，近来不同类型的烧绿石氧化物的开发高度集中于各种电化学应用。在此基础上，我们通过共沉淀法合成了烧绿石型锡酸锡纳米颗粒（Pr ₂ Sn ₂ O ₇ NPs），并通过X射线衍射，拉曼光谱，场发射扫描等不同的分析和光谱技术进行了进一步研究。电子显微镜，高分辨率透射电子显微镜和X射线光电子能谱分析。随后，我们通过用制备的Pr ₂ Sn修饰玻碳电极（GCE），设计了一种独特而新颖的电化学传感器用于呋喃西林检测₂ O _7个NP。为此，通过使用循环伏安法和差分脉冲伏安法技术进行电化学实验。Pr ₂ Sn ₂ O ₇ NPs修饰的GCE表现出高灵敏度（2.11μAμM ^–1 cm ^–2），选择性，动态线性范围（0.01–24μM和32–332μM）和较低的检测限（4 nM）。此外，Pr ₂ Sn ₂ O ₇NPs展示了有前途的真实样品分析，并在生物样品（人尿和血清）中具有良好的回收率结果，这些结果显示出比贵金属催化剂更好的结果。基于这些结果，本工作提供了明确的证据，表明烧绿石氧化物是非常适合对电化学传感器执行出色催化活性的电极材料。