Recently, perovskite structure-based metal oxide nanomaterials and their composites opted for electrocatalyst because of its excellent conductivity, unique, and favored electronic structure. In this attempt, herein we prepared the rare earth mixed metal molybdate covered reduced graphene oxide La₂(MoO₄)₃@rGO nanocomposites by a simple hydrothermal method for the sensitive detection of Moxifloxacin hydrochloride (MOF) in pharmaceutical and human urine samples. The various physicochemical analysis such as SEM, TEM, XRD and Raman spectroscopy confirms the successful formation of (La₂(MoO₄)₃@rGO) nanocomposites. Furthermore, the electroanalytical performance of La₂(MoO₄)₃@rGO modified glassy carbon electrode (La₂(MoO₄)₃@rGO/GCE) was analyzed using the cyclic voltammetry (CV) and differential pulse voltammetry (DPV) which shows excellent results with a wide range of 1.0×10^-8 M to 6.0×10^-4 M and the detection limit of 2.84×10^-9 M towards the MOF detection. Furthermore, the developed sensor expressed good selectivity, repeatability, stability and reproducibility. Finally, the real sample analysis of the developed sensor was tested in the MOF tablets and human urine samples, which shows the appreciable recoveries.

近年来，基于钙钛矿结构的金属氧化物纳米材料及其复合材料因其优异的导电性、独特且受青睐的电子结构而成为电催化剂。在本次尝试中，我们通过简单的水热法制备了稀土混合金属钼酸盐覆盖的还原氧化石墨烯 La ₂ (MoO ₄ ) ₃ @rGO 纳米复合材料，用于灵敏检测药物和人体尿液样品中的盐酸莫西沙星 (MOF)。SEM、TEM、XRD和拉曼光谱等各种物理化学分析证实了(La ₂ (MoO ₄ ) ₃ @rGO)纳米复合材料的成功形成。此外，La _{2的电分析性能}(MoO ₄ ) ₃ @rGO 改性玻碳电极 (La ₂ (MoO ₄ ) ₃ @rGO/GCE) 使用循环伏安法 (CV) 和差分脉冲伏安法 (DPV) 进行分析，结果显示在 1.0 的宽范围内×10 ^-8 M 至 6.0×10 ^-4 M 和 MOF 检测的检测限为 2.84×10 ^-9 M。此外，开发的传感器表现出良好的选择性、可重复性、稳定性和再现性。最后，开发的传感器的真实样品分析在 MOF 片剂和人体尿液样品中进行了测试，显示出可观的回收率。