Synthesis of Hyperbranched Perovskite Nanostructures

Complex functional perovskite oxides find use in a wide range of applications as dielectric, electronic, photocatalytic, optical, and ion-conducting materials. The ability to synthesize perovskites in hierarchical structures can allow for new properties or phenomena not observable in bulk morphologi...

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Bibliographic Details
Published in:Crystal growth & design 2013-09, Vol.13 (9), p.3901-3907
Main Authors: Yang, Ting, Gordon, Zachary D, Chan, Candace K
Format: Article
Language:English
Subjects:
Chemistry
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
General and physical chemistry
General, apparatus
Materials science
Methods of crystal growth
physics of crystal growth
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
Precipitation
Surface physical chemistry
Theory and models of crystal growth
physics of crystal growth, crystal morphology and orientation
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Summary:Complex functional perovskite oxides find use in a wide range of applications as dielectric, electronic, photocatalytic, optical, and ion-conducting materials. The ability to synthesize perovskites in hierarchical structures can allow for new properties or phenomena not observable in bulk morphologies. Herein we report on the solution-phase synthesis of cubic perovskite potassium lanthanum titanate into orthogonal nanostructures with hyperbranched and hexapod morphology through a facile hydrothermal synthesis without using a template, catalyst, substrate, or structure-directing agent. A systematic study of the reaction conditions and role of precursors was performed and a growth mechanism based on homogeneous dissolution–precipitation was determined.
ISSN:1528-7483
1528-7505
DOI:10.1021/cg4005483