Vibrational Studies and Properties of Hybrid Inorganic-Organic Proton Conducting Membranes Based on Nafion and Hafnium Oxide Nanoparticles (Articolo in rivista)

Type
Label
  • Vibrational Studies and Properties of Hybrid Inorganic-Organic Proton Conducting Membranes Based on Nafion and Hafnium Oxide Nanoparticles (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp804117w (literal)
Alternative label
  • Michele Vittadello; Enrico Negro; Sandra Lavina ; Giuseppe Pace ; Ahmad Safari; Vito Di Noto (2008)
    Vibrational Studies and Properties of Hybrid Inorganic-Organic Proton Conducting Membranes Based on Nafion and Hafnium Oxide Nanoparticles
    in The journal of physical chemistry. B
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Michele Vittadello; Enrico Negro; Sandra Lavina ; Giuseppe Pace ; Ahmad Safari; Vito Di Noto (literal)
Pagina inizio
  • 16590 (literal)
Pagina fine
  • 16600 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pubs.acs.org/doi/abs/10.1021/jp804117w (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 112 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1,5 : Department of Materials Science and Engineering, Rutgers UniVersity, 607 Taylor Road, Piscataway, New Jersey, USA / 2,3,6 : Dipartimento di Scienze Chimiche, Universita` di Padova, Via Marzolo 1, 35131 PadoVa (Pd), Italy / 4 :Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR c/o Dipartimento di Processi Chimici dell'Ingegneria, Via Marzolo 9, I-35131 PadoVa (Pd), Italy / 6 : Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR and INSTM, Via Marzolo 1, 35131 PadoVa (Pd), Italy (literal)
Titolo
  • Vibrational Studies and Properties of Hybrid Inorganic-Organic Proton Conducting Membranes Based on Nafion and Hafnium Oxide Nanoparticles (literal)
Abstract
  • In this report, we will describe the effect of different concentrations of HfO2 nanopowders on the structure and properties of [Nafion/(HfO2)n] membranes with n ) 0, 3, 5, 9, 11, 13, and 15 wt %, respectively. Films were prepared by a solvent casting procedure using HfO2 oxoclusters and Nafion. Seven new homogeneous membranes were obtained with thicknesses ranging from 200 to 350 ?m. Each membrane is characterized by a rough HfO2-rich surface and a smooth Nafion-rich surface, with different physical-chemical properties. Membrane characterization was accomplished by means of thermogravimetric analysis (TGA), morphological measurements (environmental scanning electron microscopy) and vibrational spectroscopy (Fourier transform infrared attenuated total reflectance spectroscopy and Fourier transform Raman spectroscopy). These systems can be described in terms of five types of water domains, Nafion-HfO2 species with well-defined stoichiometry surrounded by Nafion and hydrated hafnia. The highest conductivity at 125 °C (3.2 × 10-2 S ·cm-1) was measured on the [Nafion/(HfO2)5] film by electrical spectroscopy, with a stability range of conductivity between 5 and 115 °C. (literal)
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