The present investigation covers the synthesis, characterization and applications of a novel nano-composite of multiwalled carbon nanotubes–tin zirconium molybdophosphate (MWCNTs–SnZrMoP) ion exchanger. The synthesized material was characterized by various instrumental techniques viz. Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), and thermogravimetric/ differential thermal analysis (TGA/DTA). The nano-composite exhibited an ion exchange capacity of 2.56 meq g⁻¹, which is higher than its inorganic counterpart SnZrMoP (1.95 meq g⁻¹). The distribution studies confirmed that the as-synthesized nano-composite was selective for barium ions. The nano-composite was employed to fabricate an ion-selective electrode which showed a sub-Nernstian response for barium ions in the concentration range 1 × 10⁻⁷ M—1 × 10⁻¹ M, with a response time of 11 s. The average slope of the calibration curve was observed to be 23.3 mV/decade with 1.78 × 10⁻⁸ M as limit of detection (LOD). The synthesized material was also used as a heterogeneous catalyst in esterification reactions of some primary alcohols due to its high mechanical, thermal and chemical stability. The esters produced were characterized by nuclear magnetic resonance (¹H-NMR) and FT-IR techniques.

本研究涵盖了新型的多壁碳纳米管纳米复合材料–钼酸锡锆（MWCNTs–SnZrMoP）离子交换剂的合成，表征和应用。合成的材料通过各种仪器技术表征。傅里叶变换红外光谱（FT-IR），场发射扫描电子显微镜（FE-SEM），高分辨率透射电子显微镜（HR-TEM），X射线衍射（XRD）和热重/差热分析（​​TGA / DTA）。纳米复合材料的离子交换容量为2.56 meq g ^-1，高于其无机对应的SnZrMoP（1.95 meq g ^-1）。分布研究证实，合成后的纳米复合材料对钡离子具有选择性。该纳米复合材料用于制造离子选择性电极，该离子选择性电极对钡离子的浓度范围为1×10 ^-7  M-1×10 ^-1  M表现出亚能斯特响应，响应时间为11 s。观察到校准曲线的平均斜率为23.3 mV /十倍，其中1.78×10 ^-8  M为检测限（LOD）。由于其高的机械，热和化学稳定性，合成的材料还被用作某些伯醇的酯化反应中的非均相催化剂。产生的酯通过核磁共振（¹ H-NMR）和FT-IR技术表征。