Would anyone suggest a chemical/physical way to remove amorphous carbon phase from CNT / Fe-Carbon aerogel?

I recently grew CNTs on iron modified graphitized carbon aerogel substrate using CVD method, in C2H2/H2/N2 flow at 700-900 C. Though I was successful in CNT growth, presence of amorphous carbon...

12 August 2013 4,663 21 View