Basal plane graphite

Fig. 2.1. The molecular orientations in the commensurate V3 V3 N2 monolayer on the graphite basal plane.

The 3.48 A band has an intermediate value between the corresponding to the graphite basal plane -3.34 A- and the turbostratic carbonaceous structures, that according with Foley et al. [5] is 3.82 A. The 2.07 A band corresponds to the 2.03 A calculated by Foley for the inplane carbon-carbon bond, indicating then that the carbonaceous structure of both materials would be associated with an expanded graphitic structure, but in the case of SC-155 the carbonaceous structure is accompanied by an amorphous silica structure. 

Fig. I. Mechanisms suggested tor Iransfurmuiniii of u graphite basal plane sheet of alums into carbyne chains...

Elastic neutron diffraction was first performed (analyzer in Fig. 1 set to zero energy transfer) to establish the structure of the monolayer at low temperature. Three Bragg reflections were observed which could be indexed by a triangular lattice having a nearest-neighbor distance about 10% smaller than required for a 3 X /3 R30° commensurate structure (every third carbon hexagon in the graphite basal plane occupied). 

Figure 2. Inelastic neutron spectra from 36Ar monolayers adsorbed on Graf oil at 5 K (9). Curves plotted immediately below data are computed spectra for two different particle-orientation distribution functions (a) in-plane configuration with momentum transfer Q parallel to the preferred orientation of the graphite basal planes (b) out-of-plane configuration with Q perpendicular to the preferred basal planes. Curves at the bottom represent the calculated contribution to the observed spectra caused by in-plane scattering from misoriented crystallites.

Fig. 7. Cyclic voltammograms of background current for (a) and (b) polycrystalline diamond, (c) platinum, and (d) highly oriented pyrolytic graphite (basal plane) in 0.5 M H2SO4 (a) high-quality film (b) low-quality film [38], Reproduced by permission of The Electrochemical Society, Inc.

---