Paramagnetic Centers Created Under Mechanochemical Treatment of Mixed Molybdenum-Vanadium Oxides
- 作者: Kolbanev I.1, Degtyarev E.1, Streletskii A.1, Kokorin A.1
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隶属关系:
- N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences
- 期: 卷 47, 编号 6 (2016)
- 页面: 575-588
- 栏目: Article
- URL: https://journals.rcsi.science/0937-9347/article/view/247470
- DOI: https://doi.org/10.1007/s00723-016-0778-4
- ID: 247470
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详细
Samples of individual and mixed vanadium-molybdenum (V:Mo) oxides xV2O5:(1-x)MoO3, 0 ≤ x ≤ 1, were prepared by the method of mechanochemical activation (MCA). The samples have been characterized by X-ray diffraction (XRD) and X-band electron paramagnetic resonance (EPR) spectroscopy. Prolongation of the treatment duration time in mills led to considerable increase in the V(IV) paramagnetic centers content as well as after additional high temperature annealing at 600 °C. Paramagnetic Mo(V) centers were recorded only in the case of MCA of individual MoO3 oxide. Complexity of the composition of mechanically activated mixed oxides was confirmed with the XRD data. It is shown that in the case of all individual and mixed oxides the content of paramagnetic species increases noticeably with the increase in milling time. The annealing at 600 °C after MCA of mixed oxides forms a new mixed phase of MoV2O8 composition.
作者简介
I. Kolbanev
N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences
Email: kokorin@chph.ras.ru
俄罗斯联邦, Moscow, 119991
E. Degtyarev
N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences
Email: kokorin@chph.ras.ru
俄罗斯联邦, Moscow, 119991
A. Streletskii
N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences
Email: kokorin@chph.ras.ru
俄罗斯联邦, Moscow, 119991
A. Kokorin
N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: kokorin@chph.ras.ru
俄罗斯联邦, Moscow, 119991