Thermal stabilization of commercial photocatalyst by Zr(IV) organic salts (Abstract/Comunicazione in atti di convegno)

Type
Label
  • Thermal stabilization of commercial photocatalyst by Zr(IV) organic salts (Abstract/Comunicazione in atti di convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Alternative label
  • Alberto Strini (1), Alessandra Sanson (2), Elisa Mercadelli (2), Riccardo Bendoni (2), Marcello Marelli (3) and Luca Schiavi (1) (2014)
    Thermal stabilization of commercial photocatalyst by Zr(IV) organic salts
    in European Symposium on Surface Science, Roma, 26-28 November 2014
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Alberto Strini (1), Alessandra Sanson (2), Elisa Mercadelli (2), Riccardo Bendoni (2), Marcello Marelli (3) and Luca Schiavi (1) (literal)
Pagina inizio
  • 21 (literal)
Note
  • Abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) Construction Technologies Institute - National Research Council of Italy (ITC-CNR) via Lombardia, 49 - I-20098 San Giuliano Milanese (MI) - Italy 2) Institute of Science and Technology for Ceramics - National Research Council of Italy (ISTEC-CNR) Via Granarolo, 64 - I-48018 Faenza (RA) - Italy 3) Institute of Molecular Science and Technologies - National Research Council of Italy (ISTM-CNR) (literal)
Titolo
  • Thermal stabilization of commercial photocatalyst by Zr(IV) organic salts (literal)
Abstract
  • The thermally activated anatase to rutile conversion is a critical problem in the production of titania-based photocatalytic materials that must withstand temperatures higher than 450 °C either in production or in service. This work describes the thermal stabilization of already formed, commercially available, nanocrystalline anatase (Degussa P25) by sintering in presence of Zr(IV) organic salts. The production of thermally stable, highly active titania photocatalytic layers was demonstrated by screen-printing using specifically developed inks containing the photocatalyst and Zr(IV) organic salts in 1% and 2% Zr/Ti molar ratio. XRD analyses on powder samples demonstrate that the 2% Zr(IV) doped samples are stable at temperatures 200 °C higher than the pure commercial TiO2 phase (see figure). The samples activity was assessed by measuring the photocatalytic degradation of toluene in air at ambient concentration and low irradiance level. The zirconium doped samples demonstrate high photocatalytic activity even after a thermal treatment at 800 °C. The described method can be potentially applied to every deposition process involving the sintering of already formed nanocrystalline anatase. (literal)
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