I've synthesized 45S5 bioglass by sol-gel method and my XRD and FTIR results are similar to 45S5 bioglass but my EDX result has differences and instead of Si and Na the amount of Ca is higher. Could you please tell me what is wrong with that?
Hi Negar,
I'm not sure whether you have collected multiple EDX spectra or just one spectrum. If you collected just one spectrum and saw a significant difference in Ca content compared to other spectroscopic analysis, this could be due to a local aggregation of Calcium in that particular area of the sample. Keep in mind in EDX, with high magnification, the spectrum is collected from a very small area of the sample. Therefore you might want to collect multiple spectra from different locations of the samples before making general conclusions about the sample. Also, EDX is a surface analytical technique. Therefore the surface elemental composition you get from XRD has a possibility to differ from the other spectroscopic methods if you crush / powder the samples for the analysis.
I hope this helps and good luck with your study!
Hi M. H. Jayan S. Karunarathna . Thank yoy for your practical answer. I've collected multiple EDX spectra and the amount of Ca is higher in all of them while the amount of Si (like 45s) should be more. My XRD and IR results are similar to 45S. Now I want to know is there any possibility to synthesis 45s or Not?
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