Here, we report the preparation of edge-density controlled nitrogen doped graphite for the model catalyst study. The graphite (HOPG) surface was fabricated by N+ beam bombardment with mask. The patterned HOPG with ordered ditches was obtained . The size of ditch is comparable with the slit size in the mask and the depth is controllable which could be about 200 – 300 nm. XPS results show that the nitrogen are mainly pyridinic. By designing different type of mask with different slits, the density of the edge nitrogen could be controlled.
