期刊
MATERIALS LETTERS
卷 121, 期 -, 页码 22-25出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.01.117
关键词
Ferroelectrics; Microstructure; Surfactant
资金
- National Natural Science Foundation of China [11072208, 11272274, 11372266, 11032010]
- Hunan Provincial Natural Science Foundation of China [12JJ1007]
- Doctoral Program of Higher Education [20114301110004]
- Doctoral Dissertation of PR China [201143]
- Graduate Student of Hunan Province [CX2012B246]
Novel hierarchical Bi4Ti3O12 (BIT) micro-cross spheres were prepared by a solvothermal process with surfactant assistance. Experimental results show that the hierarchical BIT micro-cross spheres exhibit a mono-dispersed morphology with a diameter of about 5 mu m. And they consist of nano-sheets which assemble into a cross intercalated structure. Moreover, the morphological evolution process indicates that the type and concentration of surfactant play important roles in the shape controlled synthesis and cetyltrimethylammonium bromide is important in determining the self-assembling process of BIT microcross spheres. In addition, UV/vis absorption spectra show that the as-synthesized BIT samples have a slightly red-shift behavior and exhibit different band gaps with different morphologies. (C ) 2014 Elsevier B.V. All rights reserved.
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