X-ray photoelectron spectroscopic studies of molybdenum phosphate glassy system

Add time:07/22/2019    Source:sciencedirect.com

X-ray photoelectron spectroscopy has been applied to molybdenum phosphate glasses and the core-level binding energies of P 2p, Mo 3d52 and O 1s electrons have been measured. The O 1s spectrum is deconvoluted into two peaks and the variation in the peak areas is discussed in terms of an existing structural model. According to this model, oxygen in the glass is present in some or all of the following structural units depending on its composition: P=O, POP, POMo, MoOMo, MoO and . Oxygen atoms in all structural units are found to contribute to the lower binding energy peak, except those in POP which contribute to the higher binding energy peak. The binding energy of P 2p is found to decrease with the addition of MoO3 to P2O5, saturating near the metaphosphate compositions, while that of Mo 3d52 varies only slightly with composition. Rupture of the PO bonds and changes in the next nearest neighbour environment of the P and Mo atoms are believed to account for these changes.

We also recommend Trading Suppliers and Manufacturers of molybdenum metaphosphate (cas 13520-60-0). Pls Click Website Link as below: cas 13520-60-0 suppliers

Prev:Network structure of molybdenum lead phosphate glasses: Infrared spectra and constants of elasticity
Next:Additive–additive interaction: an XPS study of the effect of ZDDP on the AW/EP characteristics of molybdenum based additives)