Figure 6.

Calculated TDOSs of graphitic carbon nitride nanotubes functionalized by metals. (a) Cr, (b) Mn, (c) Co, and (d) Ni. The Fermi level is shifted to 0 eV (dot-dash line).

Pan et al. Nanoscale Research Letters 2011 6:97   doi:10.1186/1556-276X-6-97
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