Electron Spin Resonance of VO2+ Radical-Ion in Sub- and Supercritical Water Full article
| Journal |
The Journal of Supercritical Fluids
ISSN: 0896-8446 , E-ISSN: 1872-8162 |
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| Output data | Year: 2011, Volume: 57, Number: 3, Pages: 247-250 Pages count : 4 DOI: 10.1016/j.supflu.2011.04.003 | ||
| Tags | ESR, In situ spectroscopy, Supercritical water, VO2+ | ||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Siberian Branch of the Russian Academy of Sciences | 118 |
| 2 | Президиум РАН | 5.10.1 |
Abstract:
Electron spin resonance (ESR) spectra of VO2+ radical-ions in sub- and supercritical water are observed. Upon increasing the temperature from 20 to 100 °C, the fine structure line widths in the ESR spectra of the vanadyl ion are observed to be reduced that is associated with the effective averaging of the g-factor anisotropy and the hyperfine interaction. With further increasing the temperature, the spectrum components of the hyperfine structure are broadened significantly resulting in the unresolved low-intensity line in supercritical water with ΔHpp ∼ 300 G. The data obtained allow behavior peculiarities of the paramagnetic VO2+ ions in sub- and supercritical water including rotational dynamics and spin exchange between the radicals to be elucidated. The registration of the unresolved low-intensity line in supercritical conditions points to an increase in the local ion concentration in the system that can be an initial stage for the formation of vanadium-based particles in supercritical conditions. The study demonstrates that ESR is the powerful tool to investigate properties of sub- and supercritical water in situ.
Cite:
Trukhan S.N.
, Yudanov V.F.
, Martyanov O.N.
Electron Spin Resonance of VO2+ Radical-Ion in Sub- and Supercritical Water
The Journal of Supercritical Fluids. 2011. V.57. N3. P.247-250. DOI: 10.1016/j.supflu.2011.04.003 WOS Scopus РИНЦ ANCAN OpenAlex
Electron Spin Resonance of VO2+ Radical-Ion in Sub- and Supercritical Water
The Journal of Supercritical Fluids. 2011. V.57. N3. P.247-250. DOI: 10.1016/j.supflu.2011.04.003 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jan 19, 2011 |
| Accepted: | Apr 12, 2011 |
| Published online: | Apr 16, 2011 |
| Published print: | Jul 1, 2011 |
Identifiers:
| Web of science: | WOS:000292367100006 |
| Scopus: | 2-s2.0-79958016961 |
| Elibrary: | 17001918 |
| Chemical Abstracts: | 2011:715715 |
| Chemical Abstracts (print): | 155:141545 |
| OpenAlex: | W1986376143 |