| Dissociation of carbon dioxide and creation of carbon particles and films at room temperature (UV) | http://iopscience.iop.org/article/10.1088/1367-2630/9/9/321/meta | Ray Whitby | U. Brighton | Carbon was generated at 213nm and 266nm wavelength at 7.38 MPa and 31.0ºC from Near Critical CO2CO2
broading Broadening and shifting of the D and G peaks on obtained sample, ID as highly disordered carbon (D => 1380 compared to 1350 cm^-1 for graphene (two TO phonons near K point)), G peak, 1600 vs graphene G => 1580 cm^-1 (double degenerate TO ^ LO phonon mode, at gamma point)
Opalescence didn’t correlate to generating solid carbon, only lowering the wavelength acting on ncCO2ncCO2. Opalescence would indicate the atoms CO2molecule would vibrate down to a specific resonant state, yet it was the wavelength at the same pressure and temp that governed appeared to govern solidification. Would higher pressure force the molecules to a smaller space where more laser light would be more likely to ionize to ultimately break bonds? |