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Non‐UV‐Induced Radical Reactions at the Surface of TiO2 Nanoparticles That May Trigger Toxic Responses |
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| Authors: | Ivana Fenoglio Dr Giovanna Greco Dr Stefano Livraghi Dr Bice Fubini Prof |
| Institution: | Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Interdepartmental Center “G. Scansetti” for Studies on Asbestos and other Toxic Particulates and Interdepartmental Center for Nanostructured Interfaces and Surfaces, University of Torino, via Pietro Giuria 7, 10125 Torino (Italy), Fax: (+39)?11‐670‐7577 |
| Abstract: | Kept in the dark : The non‐photocatalytic generation of free radicals from fine and ultrafine TiO2 particles has been studied by means of a spin‐trapping/ESR spectroscopy technique (see figure). The amount and kind of free radicals generated depends on the crystalline structure, but not on the particle dimensions.  |
| Keywords: | EPR spectroscopy nanoparticles radical reactions titania toxicology |