Preparation and Electrorheological Behavior of Rare-Earth La Ion Doping MIL-125 Nanoparticles

Abstract

Herein, rare-earth element (lanthanum)-doped MIL-125 is synthesized via the solvothermal method. The morphology, physicochemical structure, specific surface area, and other characteristics of the synthesized material are characterized via scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer Emmett Teller, X-ray photoelectron spectroscopy, element mapping, etc. It is observed that appropriate La doping enhances the dielectric mismatch and conductive mismatch levels of the material. This enhancement leads to a stronger interface polarization capability, thereby influencing the material's dielectric properties. Ultimately, the electrorheological fluids with La-doped MIL-125 as the dispersive phase show an obvious electrorheological effect.