Crystals A were left to boil at 45 degrees Celsius for 5 minutes, Crystals B were left for 45 minutes at 45 degrees Celsius and crystals C were left to boil for 24 hours in 45 degrees Celsius. The following images are of the XRD graphs and crystal sizes viewed on a SEM. The XRD graphs have sample A, B and C on the top of the graph. Crystals A, B and C are below and labelled in the file name. Does anyone know how to describe the crystals obtained from the SEM. Also how to describe the crystals using the graphs? Thank you. There is a scale on the bottom of each SEM image to measure the crystal thickness but im not sure how to calculate it. We also have to calculate the average crystallite thickness using the Scherrer Equation, if anyone is able to figure that out. Thank you!
John Mccarty Not sure what is your ultimate goal. First of all, from SEM pictures it seems to me that your materials are not phase pure. Especially the sample A. It seems at least like a two phase material (either different polymorphs or solvates?). It can be told from pXRD patterns. Apart from that, Sample C can be described as needle-like crystals (probably it is a monoclinic structure?). LeBail refinement to check the phase purity would be beneficial in this case.
SEM definitely showed issues of morphology of your crystals, which can be in the same physical or polymorphic form though. XRPD or PXRD demonstrated the similar traces, dominated with each (particularly Sample A) strongly favoured different orientation. Three traces can be generated by the same form as well. You need further investigation to confirm if they are in the same form or not, and if not check the form purity with respect of each physical form? At least they are not pure regarding morphology.
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