Cellulose powder was used as a precursor and following synthesis route was followed. Drying at 180C for 12 hours. Carbonization at 1300C (vacuumed and filled with argon) for a hold time of 1 hour. 0-800 at 8C/min, 800-1000 @ 5C/min, 1000-1300 @ 8C/min. Same cycle was used for cooling.
I'm attaching the XRD and picture after attaching.
Perhaps you ended up with glassy carbon with impurities? If you think you are handling with pure carbon, compare with XRD of graphite or glassy carbon and also diamond. I can see quite a good deal of amorphous barckground, and the first peak almost coinciding with broad hump might mean avg. short range distance between atoms is equal to some significant lattice parameter, giving credence to diamond cubic or hexagonal carbon structure.
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