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SUMMARY:Synthesis and characterization of iron doped sodium and potassium 
 titanates using the Pechini sol-gel method
DTSTART;VALUE=DATE-TIME:20210729T094500Z
DTEND;VALUE=DATE-TIME:20210729T100000Z
DTSTAMP;VALUE=DATE-TIME:20260418T192744Z
UID:indico-contribution-7109@events.saip.org.za
DESCRIPTION:Speakers: Aluwani Guga (Nelson Mandela University)\nIron doped
  (FE:5Ti) sodium and (FE:10Ti) potassium titanates were prepared by the Pe
 chini sol-gel method and calcined at 800  . X-ray diffraction (XRD)\, Scan
 ning electron microscopy (SEM)\, Transmission Electron Microscopy (TEM)\, 
 Energy Dispersive X-ray spectrometry (EDS)\, FTIR and Raman spectroscopy w
 ere used to characterize the titanate nanomaterials. A quantitative XRD an
 alysis using Rietveld refinement of the titanates confirmed the powders to
  consist of crystalline phases with the Na2Ti7O15 and K2Ti8O17 phases pred
 ominant for the sodium and potassium titanate\, respectively. This was fur
 ther confirmed using selected area electron diffraction (SAED) in the TEM.
  SEM analysis indicated the titanates consistent with a nanostructured mat
 erial exhibiting rod like morphology. The elemental compositions of the ti
 tanites were examined by SEM-EDS and TEM-EDS and found to agree well with 
 the targeted Fe to Ti ratio from synthesis. Limited evidence for the segre
 gation of iron in the titanate regions were found indicating the iron to b
 e incorporated within the titanate lattice. Electron energy loss spectrosc
 opy (EELS) fine-structure analysis of the Fe L2\,3 core-loss edge was succ
 essfully used to match the Fe to a 3+ or 4+ valence state. Finally\, Fouri
 er transform infrared spectroscopy (FTIR) was used to classify the stretch
 ing and bending vibration modes of the functional group of sodium and pota
 ssium titanates along with Raman spectroscopy.\n\nhttps://events.saip.org.
 za/event/206/contributions/7109/
LOCATION:North-West University Potchefstroom Campus
URL:https://events.saip.org.za/event/206/contributions/7109/
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