Low-frequency dynamics of water absorbed in Nafion membranes as a function of temperature (Articolo in rivista)

Type
Label
  • Low-frequency dynamics of water absorbed in Nafion membranes as a function of temperature (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/14786430600930200 (literal)
Alternative label
  • A. Paciaroni ab; M. Casciola bc; E. Cornicchi ab; M. Marconi ab; G. Onori ab; A. Donnadio bc; M. Sganappa bc; A. De Francesco d (2007)
    Low-frequency dynamics of water absorbed in Nafion membranes as a function of temperature
    in Philosophical magazine (2003, Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Paciaroni ab; M. Casciola bc; E. Cornicchi ab; M. Marconi ab; G. Onori ab; A. Donnadio bc; M. Sganappa bc; A. De Francesco d (literal)
Pagina inizio
  • 477 (literal)
Pagina fine
  • 483 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://dx.doi.org/10.1080/14786430600930200 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 87 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3-5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Dipartimento di Fisica dell'Università di Perugia, CNR-INFM CRS SOFT, Via A, Pascoli, I-06123 Perugia, Italy b CEMIN (Centro di Eccellenza per i Materiali Innovativi e Nanostrutturati), c/o Dipartimento di Chimica dell'Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy c Dipartimento di Chimica dell'Università di Perugia, Via Elce di Sotto 8, I-06123 Perugia, Italy d CNR-INFM CRS SOFT, I-00185 Roma, Italy, c/o Institut Laue-Langevin, Rue Jules Horowitz 6, F-38042 Grenoble, France (literal)
Titolo
  • Low-frequency dynamics of water absorbed in Nafion membranes as a function of temperature (literal)
Abstract
  • We performed a neutron scattering Study to investigate file dynamical behaviour of water absorbed in Nafion at low hydration levels (lambda=6, lambda=moles of water/moles of sulphonic acid sites) as a function of temperature ill file range 200-300 K. To Single Out file signal of the confined water, file measurements were performed oil samples hydrated with both H2O and D2O in the same temperature ran,,e. Due to the strong incoherent scattering cross section of hydrogen atoms with respect to deuterium. in the difference spectra the contribution from the Nafion membrane is subtracted out and most of the spectra originates from absorbed water. The estimated dynamical Susceptibility exhibits features that resemble those of bulk water. In particular, the spectra display a bump at around 1 meV, possibly related to the alpha relaxation, the intensity of which is markedly affected by the temperature change. Two features due to the phonon-like collective hydrogen bond network dynamics are visible at approximately 7 meV and 25 meV. (literal)
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