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Preparation and characterization of potassium sodium niobate nanofibers by electrospinning
Author(s) -
Lusiola Tony,
Gorjan Lovro,
Clemens Frank
Publication year - 2018
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12883
Subject(s) - electrospinning , materials science , calcination , nanofiber , polyvinylpyrrolidone , chemical engineering , scanning electron microscope , fiber , potassium niobate , composite material , polymer chemistry , polymer , ferroelectricity , organic chemistry , dielectric , chemistry , optoelectronics , engineering , catalysis
Abstract In this work, we describe the electrospinning of (K,Na)NbO 3 fibers and the effect of calcination temperature on the final phase composition. The envisaged application is for the fabrication of ferroelectric sensor hybrid materials. A solution of potassium acetate, sodium methoxide, and niobium ethoxide dissolved in methanol, acetylacetone, and acetic acid was mixed with polyvinylpyrrolidone ( PVP ) dissolved in methanol, producing a viscous solution for electrospinning. Confirmation that the proposed equation on the average diameter of fibers produced from high viscosity solutions was larger than that of a lower viscosity solution was made. A scanning electron microscopy ( SEM ) study showed the fibers to be cylindrical, smooth with diameters of around 400 nm and an aspect ratio >1000. The electrospun fibers were calcined from 700°C to 1050°C observing the fiber morphology. With increasing calcining temperature, the grain size increased. The calcined (K,Na)NbO 3 nanofibers were brittle and generally found to display the “necklace effect.”