Uniform small-sized MOF-Ti nanoparticles were prepared by a one-step hydrothermal method, and then a 5–10 nm TiO₂ shell was coated onto them by using the sol–gel method, and MOF-Ti/TiO₂ with a specific surface area of 50.2 m² g⁻¹ was successfully prepared. The nanoparticles were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), nitrogen adsorption–desorption isotherms (BET), and X-ray photoelectron spectroscopy (XPS). The above-analyses have elaborated the experimental study of their morphology, elements, and energy of organic functional groups. At the same time, through the use of a high-voltage rotary rheometer to test their rheological properties, the analysis of shear stress, ER efficiency, shear viscosity, etc. was performed and their dielectric constant and dielectric loss were studied by using a broadband dielectric spectrometer. Finally, we found that MOF-Ti/TiO₂ is a new core–shell nanocomposite particle with a small particle size and good electrorheological properties.

中文翻译：

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氧化钛包覆的负载钛的金属有机骨架（MOF-Ti）纳米粒子表现出改善的电流变性能。

通过一步水热法制备均匀的小尺寸MOF-Ti纳米颗粒，然后使用溶胶-凝胶法将5-10 nm的TiO ₂壳包覆到其上，然后用特定的MOF-Ti / TiO ₂表面积50.2 m ² g ^-1准备成功。使用扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线粉末衍射（XRD），傅里叶变换红外光谱（FT-IR），氮吸附-解吸等温线（BET）和X-射线光电子能谱（XPS）。以上分析详细阐述了有机官能团的形态，元素和能量的实验研究。同时，通过高压旋转流变仪测试其流变性能，进行了剪切应力，ER效率，剪切粘度等分析，并利用宽带技术对其介电常数和介电损耗进行了研究。介电谱仪。最后，我们发现MOF-Ti / TiO ₂ 是一种新型的核-壳纳米复合颗粒，具有较小的粒径和良好的电流变特性。