摘要
以水热合成的Bi3.15Nd0.85Ti3O12（BNdT）纳米颗粒为原料,用熔盐法合成了BNdT微米薄片,用X射线衍射和透射电镜研究了微米薄片的显微结构,讨论了片状结构的生长机理,并分析了微米薄片的紫外-可见光吸收性能。结果表明：合成的微米薄片是单晶的层状钙钛矿型结构,横向尺寸为0.2~2.0μm,光学带隙为3.12 e V;随反应温度的升高和反应时间的延长,BNdT微米片横向尺寸逐渐增大;随熔盐含量增加,晶粒尺寸几乎无变化;BNdT晶体结构的大各向异性使其容易形成片状结构。
Bi3.15Nd0.85Ti3O12（BNdT） microplates were prepared through a molten salt synthesis method using the nanoparticles synthesized by the hydrothermal method as raw materials. The microstructure of BNdT microplates was characterized by X-ray diffraction and transmission electron microscopy. The growth mechanism of BNdT microplates was discussed, and the optical properties of the microplates were investigated by the UV-visible absorption spectra. The results show that the as-prepared BNd T microplates are single crystals with a layered perovskite structure and their landscape dimensions are in the range of 0.2-2.0 μm. The band gap of the BNd T microplates is 3.24 e V. The landscape dimension of the BNdT microplates increases gradually with the increasing reaction temperature and time, while their grain size varies hardly with the increasing content of molten salt. The as-prepared plate structure is due to the high intrinsic anisotropic growth nature of the BNdT crystals.
出处
《电子元件与材料》
CAS
CSCD
2015年第4期5-9,共5页
Electronic Components And Materials
基金
湖北省自然科学基金青年项目资助(No.2014CFB562)
湖北第二师范学院校管课题资助(No.2012B164)
