Optimization of Synthesis Conditions of Monoclinic Potassium Niobate (KNbO3) and its Effect on Morphology

Stoichiometric orthorhombic and monoclinic KNbO3 samples have been prepared through low temperature–time hydrothermal method. Optimized synthesis conditions for monoclinic KNbO3 have been found to be hydrothermal treatment of 15M precursor solution at 160°C for 8 h. Transformation of orthorhombic KN...

Full description

Saved in:
Bibliographic Details
Published in:International journal of applied ceramic technology 2016-07, Vol.13 (4), p.743-752
Main Authors: Chakraborty, Subhabrata, Kumar Ghosh, Sudhir, Chandra Das, Gopes, Mukherjee, Siddhartha
Format: Article
Language:English
Subjects:
Ceramics
hierarchical morphology
KNbO3
monoclinic
Morphology
Optimization
optimization of synthesis conditions
Potassium niobates
Precursors
Stacks
Synthesis
Transformations
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Stoichiometric orthorhombic and monoclinic KNbO3 samples have been prepared through low temperature–time hydrothermal method. Optimized synthesis conditions for monoclinic KNbO3 have been found to be hydrothermal treatment of 15M precursor solution at 160°C for 8 h. Transformation of orthorhombic KNbO3 to monoclinic KNbO3 has been established through thermodynamic considerations. Further, successful synthesis of orthorhombic KNbO3 has also been achieved under moderated conditions. FESEM analyses of synthesized materials revealed that initially formed block‐like structures either stack upon one another to form hierarchical morphology or join end to end to form rods. Observations have been substantiated through HRTEM, EDX, FTIR, and Raman spectra analyses.
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.12532