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|Title:||Study of effect of annealing on morphology of hydrothermally synthesized potassium titanate fibers|
|Keywords:||Potassium titanate;Hydrothermal synthesis;Characterization|
|Abstract:||The potassium titanate fibers have been synthesized using TiO2 and KOH as startup materials in one step hydrothermal method. The thickness of synthesized fibres ranges from 20 to 100 nm whereas the length varies from 200 nm to 200 microns. The effect of annealing at various temperatures on the synthesized nanofibers has also been investigated by characterization using XRD, SEM, TEM, Raman and FT Raman. The annealing at 800 °C has been found to yield a pure K2Ti6O13 phase when its XRD peaks have been compared with the standard XRD data. The growth of nanowires is along the (010) direction. However, when annealed at 400 °C, 600 °C, 800 °C and 1000 °C the samples show the transformation into several other structural phases. However, annealing above 800 °C causes all the structures of nanowires to transform into K2Ti6O13. The TEM image shows that the product formed contains a large quantity of fibres with almost uniform thicknesses but with varied lengths.|
|ISSN:||0975-0959 (Online); 0301-1208 (Print)|
|Appears in Collections:||IJPAP Vol.56(09) [September 2018]|
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