Abstract
Copper oxide-containing, sodium silicate glasses with composition (0.70-x)SiO2-0.30Na2O-xCuO (x in the range 0-0.2), were prepared by conventional melting and casting. The surface structure has been investigated by X-ray photoelectron spectroscopy. Evidence for the presence of copper in the Cu+ state for glasses with x ≤ 0.14, and for both oxidation states (Cu+ and Cu2+) in the glass where x = 0.18, has been obtained from the "shake up" satellite structure of the Cu 2p core level spectra. A deconvolution procedure has been undertaken to determine quantitatively the [Cu2+]/[Cutotal] ratio. The non-bridging oxygen content, obtained from the deconvolution of the O 1s core level spectra, increases with increasing copper oxide content indicating that copper acts as a network modifier. The O 1s spectra were modelled in such a way as to separate the contributions from SiOCu and SiONa to the non-bridging oxygen signal.
| Original language | English |
|---|---|
| Pages (from-to) | 271-282 |
| Number of pages | 12 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 215 |
| Issue number | 2-3 |
| DOIs | |
| State | Published - Jul 1997 |
Bibliographical note
Funding Information:One of us (A.M.) would like to acknowledge the support of King Fahd University of Petroleum and Minerals (KFUPM) and the Physics Department of KFUPM.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry