Nature of Interactions at the Interface of Two Water-Saturated Commercial TiO2 Polymorphs

Claudio De Pasquale, Valentina Marsala, Pellegrino Conte, Vittorio Loddo, Giuseppe Alonzo, Leonardo Palmisano, Valentina Marsala, Vittorio Loddo, Claudio De Pasquale, Giuseppe Alonzo, Leonardo Palmisano, Pellegrino Conte

Risultato della ricerca: Article

11 Citazioni (Scopus)

Abstract

Two commercial TiO2 samples, a 100% anataseand a 100% rutile, were used for the fast field cycling NMRexperiments. The results showed a different behavior betweenthe different samples. In particular, water molecules wereunbonded to the solid surface for the rutile sample, whereasthey appeared to chemically interact with the surface throughH-bond formation with the anatase sample. The abovefindings accord with the generally lower activity of rutilewith respect to anatase reported in literature for photocatalyticoxidation reactions in water. The difficulty of water to interactwith rutile surface, indeed, could hinder the formation of OHradicals, which are the most important oxidant species.
Lingua originaleEnglish
pagine (da-a)5269-5273
Numero di pagine5
RivistaJOURNAL OF PHYSICAL CHEMISTRY. C
Volume117
Stato di pubblicazionePublished - 2013

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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