Issue 36, 2015

Surfactant-free synthesis of SrTiO3 hierarchical structures in ethanol/water mixed solvent at room temperature

Abstract

Perovskites are a family of important functional materials with excellent ferroelectric, dielectric, pyroelectric, piezoelectric, and electro-optic properties and potential for novel applications. The synthesis methodology for perovskites usually involves harsh conditions. Here, we report a facile new route for the synthesis of SrTiO3 hierarchical structures by fast mixing SrCl2ยท6H2O aqueous solution and titanium isopropoxide ethanol solution at room temperature without using any structure-directing templates. The preparation of SrTiO3 particles with different morphologies from cubic to starfish-like hierarchical structures is strongly dependent on the pH value of the reaction system and the volume ratio of water/ethanol. The formation mechanism of SrTiO3 hierarchical structures is discussed. This work provides a green method for the synthesis of other perovskite materials in the future.

Graphical abstract: Surfactant-free synthesis of SrTiO3 hierarchical structures in ethanol/water mixed solvent at room temperature

Supplementary files

Article information

Article type
Paper
Submitted
10 nov 2014
Accepted
04 dez 2014
First published
09 dez 2014

CrystEngComm, 2015,17, 6895-6900

Author version available

Surfactant-free synthesis of SrTiO3 hierarchical structures in ethanol/water mixed solvent at room temperature

Q. Wu, J. Liu, S. Chen, H. Liang and S. Yu, CrystEngComm, 2015, 17, 6895 DOI: 10.1039/C4CE02228A

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