Risultati scientifici

High-Pressure Synthesis and Gas-Sensing Tests of 1‐D Polymer/ Aluminophosphate Nanocomposites

Anno: 2021

Autori: Alabarse F.G., Polisi M., Fabbiani M., Quartieri S., Arletti R., Joseph B., Capitani F., Contreras S., Konczewicz L., Rouquette J., Alonso B., Di Renzo F., Zambotti G., Baù M., Ferrari M., Ferrari V., Ponzoni A., Santoro M., Haines J.

Affiliazione autori: -Elettra Sincrotrone Trieste, Trieste, Italy;
-Dipartimento di Scienze Chimiche e Geologiche, Università di Modena, Modena, Italy; -Dipartimento di chimica, Università di Torino, Italy;
-Dipartimento di Scienze della Terra, Università di Torino, Torino, Italy;
-Synchrotron Soleil, Saint Aubin – BP48, Gif sur Yvette, France;
-Laboratoire Charles Coulomb, CNRS, Université de Montpellier, Montpellier, France;
-ICGM, CNRS, Université de Montpellier, ENSCM, Montpellier, France;
-Istituto Nazionale di Ottica, INO-CNR, and Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Brescia, Brescia, Italy;
-Istituto Nazionale di Ottica, INO-CNR, and European Laboratory for Non Linear Spectroscopy, LENS, Sesto Fiorentino, Italy;

Abstract: Recently, filling zeolites with gaseous hydrocarbons at high pressures in diamond anvil cells has been carried out to synthesize novel polymer-guest/zeolite-host nanocomposites with potential, intriguing applications, although the small amount of materials, 10^−7 cm^3, severely limited true technological exploitation. Here, liquid phenylacetylene, a much more practical reactant, was polymerized in the 12 Å channels of the aluminophosphate Virginia Polytechnic Institute-Five (VFI) at about 0.8 GPa and 140 °C, with large volumes in the order of 0.6 cm3. The resulting polymer/VFI composite was investigated by synchrotron X-ray diffraction and optical and 1H, 13C, and 27Al nuclear magnetic resonance spectroscopy. The materials, consisting of disordered π-conjugated polyphenylacetylene chains in the pores of VFI, were deposited on quartz crystal microbalances and tested as gas sensors. We obtained promising sensing performances to water and butanol vapors, attributed to the finely tuned nanostructure of the composites. High-pressure synthesis is used here to obtain an otherwise unattainable true technological material.


Volume: 13      Da Pagina: 27237  A: 27244

Parole chiavi: nanocomposites, high-pressure synthesis, gas sensing, polymer, aluminophosphate
DOI: 10.1021/acsami.1c00625

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