Article Title

Shape-controlled growth of SrTiO₃ polyhedral submicro/nanocrystals

Authors

Lingqing Dong, 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 Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315210, China
Hui Shi, Soft Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
Kui Cheng, 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
Qi Wang, Soft Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
Wenjian Weng, 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 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Weiqiang Han, 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 Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315210, China School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China

Keywords

SrTiO3, BaTiO3, shape-controlled growth, alcohol molecules, pKa values

Abstract

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.

Graphical Abstract

DOI

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

Publisher

Tsinghua University Press

Recommended Citation

Lingqing Dong,Hui Shi,Kui Cheng,Qi Wang,Wenjian Weng,Weiqiang Han, Shape-controlled growth of SrTiO3 polyhedral submicro/nanocrystals. NanoRes.2014, 7(9): 1311–1318