Carbon monoxide MgO from dispersed solids to single crystals: a review and new advances

Aging of magnetic properties in MgO films

“…Apart from a great number of carbonate ion bands spanning the 1000-2200 cm −1 range, 16 infrared peaks at 990-1060 cm −1 are observed ͑inset Fig. 4͒, in good agreement with the calculated frequency for substitutional hydrogen in MgO.…”

CO adsorption on the surface of MgO(001) thin films

“…They followed the approach of controlling the morphology of MgO particles using different preparation conditions, and combining CO probe spectroscopy with high resolution transmission electron microscopy (TEM) imaging to assign the spectral features. In a series of papers these authors were able to identify several CO infrared absorption bands due to CO bound to differently coordinated Mg sites on the surface of MgO powder [1][2][3][4][5]. In the limit of highly regular MgO particles, perfect agreement with IR studies on vacuumcleaved MgO single crystals was achieved, bridging the gap between pure surface science and real catalyst studies [4].…”

O2adsorption dependent photoluminescence emission from metal oxide nanoparticles

“…A fraction of low coordinated surface elements become uncovered and addressable by light excitation with sub band gap energy. 35 In comparison to MgO as an insulator -the band gap E = 7.8 eV corresponds to a wavelength below l = 200 nm -the band gap of ZnO (E = 3.4 eV) corresponds to the absorption threshold at l B 370 nm and is clearly observable in the spectra of ZnO (Fig. 4a after synthesis and Fig.…”