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

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

Research output: Contribution to journalArticlepeer-review

11 Citations (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.
Original languageEnglish
Pages (from-to)5269-5273
Number of pages5
JournalJOURNAL OF PHYSICAL CHEMISTRY. C
Volume117
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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