I know that the peak at 26 degrees corresponds to Carbon...but the peak at 39.315 degrees is a bit more intense and i was hoping that it could be only platinum catalyst impurity and not any other impurity.
Hi Clement,
I have seen Pt at ~39.5 in some of my XRD data but they are always from the stage, not from my samples. So yes, the signal at 39.3 may be Pt. Have you tried to use an XRD evaluation software to identify your peaks? I also recommend doing a high resolution TEM with EDS-- you will clearly see the nanotubes and the catalyst (which you can use EDS to identify).
Best wishes.
For hexagonal carbon nanotube the xrd peak should appear around 26 0 . 39 degree sharp peak signifies that there is a impurity. I recommend you to perform XPS and elemental EDAX of your sample to verify what is the impurity and bonding between MWCNT and the impurity.
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