There is a peak in my XRD of MWCNT at 39.3135 degree. What possibly could that be? Platinum catalyst or any other impurity?

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...

01 January 2015 7,777 4 View