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题名: BaTiO3 Supercages: Unusual Oriented Nanoparticle Aggregation and Continuous Ordering Transition in Morphology
作者: Li, J (Li, Juan); Hietala, S (Hietala, Sami); Tian, XL (Tian, Xuelin)
通讯作者: Tian, Xuelin
关键词: mesocrystals ; hollow structures ; oriented aggregation ; electric double layer ; ordering transition ; molten hydrated salt ; microwave absorption
刊名: ACS NANO
发表日期: 2015
DOI: 10.1021/nn505667x
卷: 9, 期:1, 页:496-502
收录类别: SCI
资助者: Academy of Finland (Centres of Excellence)National Natural Science Foundation of China
摘要: Here we report the organic-free mesocrystalline superstructured cages of BaTiO3, i.e., the BaTiO3 supercages, which are synthesized by a one-step templateless and additive-free route using molten hydrated salt as the reaction medium. An unusual three-dimensional oriented aggregation of primary BaTiO3 nanoparticles in the medium of high ionic strength, which normally favors random aggregation, is identified to take place at the early stage of the synthesis. The spherical BaTiO3 aggregates further experience a remarkable continuous ordering transition in morphology, consisting of nanoparticle faceting and nanosheet formation steps. This ordering transition in conjunction with Ostwald ripening-induced solid evacuation leads to the formation of unique supercage structure of BaTiO3. Benefiting from their structure, the BaTiO3 supercages exhibit improved microwave absorption property.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/4211
Appears in Collections:材料物理与化学研究室_期刊论文

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作者单位: Aalto Univ, Dept Mat Sci & Engn, Espoo 02150, Finland;Univ Helsinki, Polymer Chem Lab, Dept Chem, FIN-00014 Helsinki, Finland;Aalto Univ, Dept Appl Phys, Espoo 02150, Finland;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China

Recommended Citation:
Li, J ,Hietala, S ,Tian, XL . BaTiO3 Supercages: Unusual Oriented Nanoparticle Aggregation and Continuous Ordering Transition in Morphology[J]. ACS NANO,2015,9(1):496-502.
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