One-pot synthesis of polyaniline-doped in mesoporous TiO2 and its electrorheological behavior

A class of hybrid organic–inorganic composite for application in electrorheological (ER) fluid was prepared by using a simple one-pot method. Transmission electron microscopy (TEM) image shows that the synthesized material had a mesoporous structure. X-ray diffraction (XRD) further proves that the pore size is about 7.4 nm with an anatase TiO2 framework. Fourier transform infrared (FT-IR) and nitrogen sorption curve reveal polyaniline (PANI) is doped in mesochannels. The ER behaviors of PANI/TiO2 in silicone oil are invesigated with different doping degrees under different electric fields. The results obtained provide more insight into the role of proper doping in ER fluid.