Research Article

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2014, 7(9): 1311–1318

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https://doi.org/10.1007/s12274-014-0495-y

Shape-controlled growth of SrTiO3 polyhedral submicro/ nanocrystals

Lingqing Dong1,2,§, Hui Shi3,§, Kui Cheng1,§, Qi Wang3, Wenjian Weng1,4 (*), and Weiqiang Han1,2,5 (*)

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1 Department of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China
2 Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315210, China
3 Soft Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
4 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
5 School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
§ These authors contributed equally to this work.

Keywords: SrTiO3, BaTiO3, shape-controlled growth, alcohol molecules, pKa values
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  • Abstract
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A series of SrTiO3 polyhedral submicro/nanocrystals with systematic morphology evolution from cubic to edge-truncated cubic and truncated rhombic dodecahedra have been synthesized by using a series of alcohol molecules with different acidities as surfactants. The concentration and pKa value of the alcohols both play important roles in determining the size and shape of the SrTiO3 polyhedral submicro/nanocrystals. The adsorption energy of alcohol molecules on SrTiO3 {110} facets depends on their pKa values, which are therefore critical for morphology control. Using the same strategy, a series of BaTiO3 polyhedral submicro/nanocrystals with systematic morphology evolution have also been successfully prepared.
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Shape-controlled growth of SrTiO3 polyhedral submicro/ nanocrystals. Nano Res. 2014, 7(9): 1311–1318 https://doi.org/10.1007/s12274-014-0495-y

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