期刊
INTEGRATED FERROELECTRICS
卷 195, 期 1, 页码 196-207出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10584587.2019.1570033
关键词
Barium titanate; Titanate nanosheets; Core-shell structure; Nanocomposites
资金
- King Mongkut's Institute of Technology Ladkrabang [KREF145908, 2561-01-05-77]
Core-shell structure nanocomposites have been of interest, as they can exhibit unique properties arising from the combination of peculiar characteristics of each component. In this research, core-shell structured nanocomposites, comprising barium titanate (BaTiO3; BT) nanoparticles as the core and titanate (TiO2) nanosheets as the shell, were prepared. The surface of barium titanate (BT) nanoparticles was modified chemically by hydrogen peroxide (H2O2) to create hydroxyl groups. TiO2 nanosheets were deposited on the surface of the functionalized BT core, via alternate adsorption with oppositely charged polyelectrolyte poly(diallyl dimethylammonium) (PDDA) cations to produce an ultrathin TiO2 shell layer that encapsulates BaTiO3 nanoparticles. The structure of the core-shell particles was investigated in order to illustrate their formation mechanisms. Furthermore, this work reported the advance in utilizing a core-shell nanostructure to enhance relative permittivity and maintaining a low loss of polymer nanocomposites. A significant improvement in relative permittivity is attributed to the TiO2 shell, which acts as polarizable dipoles and consequently enhances interfacial polarization. The results indicated that the structure of core-shell nanocomposites is attractive as a novel structural building block for fabricating novel materials and electronic devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据