Abstract
A technique for the microwave-activated synthesis of calcium titanate nanopowder was proposed. The microwave effect used in the synthesis of CaTiO3 samples when using sodium carbonate as a precipitant allowed obtaining a chemically homogeneous nanopowder with a significant reduction of the process time.
 
 
 
Highlights
The aim of this study was to establish the effect of microwave exposure on the synthesis of CaTiO3 nanoparticles by the sol-gel method
The following precursors were used in this study: calcium nitrate crystallohydrate Са(NO3)2·5H2O, titanium chloride TiCl4, sodium carbonate Na2CO3
For the sample obtained without microwave exposure, distinct peaks of unreacted starting substances: titanium and calcium oxides were observed
Summary
The development of methods for obtaining and studying the properties of nanoparticles and nanostructured materials of various chemical composition, structure, and morphology became a priority task in materials science. Oxide compounds with a perovskite structure are widely used in the manufacture of solid oxide fuel cells, catalysts, magnetic materials, chemical sensors, and electrodes [1, 2]. Calcium titanate is known as a promising material with ferroelectric and paraelectric properties; it is used as an active element in piezoelectric transducers, optical modulators, ferroelectric memory devices, capacitors with a high dielectric constant, microwave devices, and photocatalysts [3]. Sol-gel technology has already proved to be efficient methods for the synthesis of powders of various compounds with particles of the nanometre range [4, 5]. The aim of this study was to establish the effect of microwave exposure on the synthesis of CaTiO3 nanoparticles by the sol-gel method
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