Oriented TiO2 Nanostructured Pillar Arrays: Synthesis and Characterization

Authors

  • Federico Cesano,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Serena Bertarione,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Alessandro Damin,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Giovanni Agostini,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Sandro Usseglio,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Jenny G. Vitillo,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Carlo Lamberti,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Giuseppe Spoto,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Domenica Scarano,

    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
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  • Adriano Zecchina

    Corresponding author
    1. Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy)
    • Department of Inorganic, Physical, and Materials Chemistry, NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence, and INSTM Centro di Riferimento, University of Torino, Via P. Giuria, 7, 10125 Torino (Italy).
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  • The authors would like to thank MIUR, INSTM Consorzio, NANOMAT Project and the Regione Piemonte Research Program (Sistemi a base di carbonio nanostrutturato per applicazioni industriali -D37) for financial support, Dr. Micaela Castellino for helping with conductivity measurements. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

original image

Nanostructured parallelly oriented TiO2 micropillar arrays, either pure or implanted on a carbon matrix, are prepared via controlled oxidation of hybrid carbonaceous systems. Mild oxidation at 500 °C (O2 1%) leads to formation of parallelly oriented elongated TiO2 pillars, which emerge from a compact α-C phase (TiO2/C composite). Under strong oxidation conditions (O2 10%) formation of pure TiO2 pillar arrays is observed. The pillars constituted of partially cemented anatase or anatase/rutile nanoparticles.

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