期刊
SOFT MATTER
卷 13, 期 43, 页码 7879-7889出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7sm01422h
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资金
- National Natural Science Foundation [NSFC 51472133]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, P. R. China
Herein, a simple hydrothermal method is employed to synthesize anatase TiO2 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 TiO2 product. The formation mechanism of TiO2 enclosed by (100) and (101) facets is deduced to be the selective adsorption of OH- on the (100) facets of anatase TiO2. Electroheological (ER) experiments indicate that the tetragonal-facet-rod anatase TiO2 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.
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