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Synergistic Role of B and F Dopants in Promoting the Photocatalytic Activity of Rutile TiO2

Authors

  • Dr. Maria Fittipaldi,

    1. INSTM and Department of chemistry “U. Shiff”, Firenze University, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI) (Italy)
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  • Dr. Valentina Gombac,

    1. Department of Chemical and Pharmaceutical Sciences and ICCOM-CNR Trieste Research Unit, Trieste University, via L. Giorgieri 1, 34127 Trieste (Italy), Fax: (+39) 0405583903
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  • Dr. Alberto Gasparotto,

    1. Department of Chemistry, Padova University via Marzolo 1, 35131 Padova (Italy)
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  • Dr. Chiara Deiana,

    1. Department of IPM Chemistry and NIS Centre of Excellence, Torino University, Via P. Giuria 7, 10125 Torino (Italy)
    2. Department of Chemistry, Insubria University, Via Licini 3, 22100 Como, Italy
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  • Prof. Gianpiero Adami,

    1. Department of Chemical and Pharmaceutical Sciences and ICCOM-CNR Trieste Research Unit, Trieste University, via L. Giorgieri 1, 34127 Trieste (Italy), Fax: (+39) 0405583903
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  • Dr. Davide Barreca,

    1. CNR-ISTM and INSTM - Department of Chemistry, Padova University, via Marzolo 1, 35131 Padova (Italy)
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  • Dr. Tiziano Montini,

    1. Department of Chemical and Pharmaceutical Sciences and ICCOM-CNR Trieste Research Unit, Trieste University, via L. Giorgieri 1, 34127 Trieste (Italy), Fax: (+39) 0405583903
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  • Prof. Gianmario Martra,

    1. Department of IPM Chemistry and NIS Centre of Excellence, Torino University, Via P. Giuria 7, 10125 Torino (Italy)
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  • Prof. Dante Gatteschi,

    1. INSTM and Department of chemistry “U. Shiff”, Firenze University, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI) (Italy)
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  • Prof. Paolo Fornasiero

    Corresponding author
    1. Department of Chemical and Pharmaceutical Sciences and ICCOM-CNR Trieste Research Unit, Trieste University, via L. Giorgieri 1, 34127 Trieste (Italy), Fax: (+39) 0405583903
    • Department of Chemical and Pharmaceutical Sciences and ICCOM-CNR Trieste Research Unit, Trieste University, via L. Giorgieri 1, 34127 Trieste (Italy), Fax: (+39) 0405583903
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Abstract

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Doping for the environment: Electron paramagnetic resonance and X-ray photoelectron spectroscopy investigations prove—for the first time—that the proximity of surface F and surface/second layer B generates hole-trapping species responsible for a remarkable photocatalytic activity of rutile TiO2, even for low-surface-area materials. A careful synthetic design of doped TiO2 containing a high concentration of these species may lead to significantly enhanced performances in pollutant degradation.

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