关键字：Titanium compounds;Dielectric properties - Electron microscopy - High resolution transmission electron microscopy - High-k dielectric - Phase structure - Scanning electron microscopy - Titanium dioxide - Transmission electron microscopy - X ray diffraction;Alkali treatment - Anatase TiO2 - Broad-band dielectric spectroscopy - Electrorheological activities - Formation mechanism - Hydrothermal methods - Selective adsorption - Titanate nanofiber
摘要：Herein, a simple hydrothermal method is employed to synthesize anatase TiO<inf>2</inf>with dominant (100) facets, as a precursor, using titanate nanofibers derived from alkali treatment. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) are carried out to confirm the surface morphology and phase structure of the TiO<inf>2</inf>product. The formation mechanism of TiO<inf>2</inf>enclosed by (100) and (101) facets is deduced to be the selective adsorption of OH<sup>-</sup>on the (100) facets of anatase TiO<inf>2</inf>. Electroheological (ER) experiments indicate that the tetragonal-facet-rod anatase TiO<inf>2</inf>with exposed (100) facets exhibits an excellent ER performance with a high ER efficiency of up to 52.5, which results from the anisotropy of its special morphology. In addition, the effect of shape on its dielectric property is investigated via broadband dielectric spectroscopy.<br/> © 2017 The Royal Society of Chemistry.
卷号：13
期号：43
是否译文：否