PHOTOELECTRON-SPECTROSCOPY OF MV12O30.7-CENTER-DOT-NH(2)O XEROGELS (M= MG, CA, SR, BA)

Authors
TVARDAUSKAS H BONDARENKA V MARTUNAS Z GREBINSKIJ S MICKEVICIUS S VOLKOV V ZAKHAROVA G
Citation
H. Tvardauskas et al., PHOTOELECTRON-SPECTROSCOPY OF MV12O30.7-CENTER-DOT-NH(2)O XEROGELS (M= MG, CA, SR, BA), Applied surface science, 134(1-4), 1998, pp. 229-233
Citations number
16
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
134
Issue
1-4
Year of publication
1998
Pages
229 - 233
Database
ISI
SICI code
0169-4332(1998)134:1-4<229:POMX(>2.0.ZU;2-7
Abstract
The hydrated compounds MV12O30.7 . nH(2)O were investigated by X-ray p hotoelectron spectroscopy. The shape and location of the complex core photoelectron lines V 2p, O 1s and M 3d were analyzed for the xerogels with different M = Mg, Ca, Sr and Ba. The valency of the vanadium ion s, which plays an important role in the electrical conductivity of the xerogels, was studied. The V4+/(V4+ + V5+) concentration ratio calcul ated from the area of the Gaussian components of the V 2p lines indica tes that this ratio is similar to 0.1 for all investigated compounds. The V3+ ions were obtained in the xerogels after cleaving by Arf ions. (C) 1998 Elsevier Science B.V. All rights reserved.