Assignment of Adsorbed Species by FT-IR Spectroscopy

Changes in the absorbance behavior of the vibrational bands of both bidentate carbonate species, as the amount of introduced CO was gradually inCTeased, were monitored using FT-IR spectroscopy. Two species, A and B in Chart 12.1, were detected when a small amount of COj was introduced onto MgO. The observed 

CHART 12.1 Two bidentate species on MgO after introduction of CO. Reprinted with permission from Ref. [13]. American Chemical Society. 

3 Observation of Photoactive Species by Photoiuminescence (PL) and Eiectron Paramagnetic Resonance (EPR) Spectroscopies 

FIGURE 12.8 Phosphorescence excitation spectra of MgO (a) after pretreatment, (b) after introduction of 33 omol g-MgO of CO, and (c) after introduction of 66mol g-MgO of CO. Reprinted with permission from Ref. [13], American Chemical Society. 

---